Average Weight MCQ Quiz - Objective Question with Answer for Average Weight - Download Free PDF
Last updated on Jun 16, 2025
Latest Average Weight MCQ Objective Questions
Average Weight Question 1:
The arithmetic mean of the weights of 14 students in a class is 42 kgs. If the weight of the teacher is also included, the mean weight increases by 600 grams. Then the weight of the teacher is
Answer (Detailed Solution Below)
Average Weight Question 1 Detailed Solution
Given:
The arithmetic mean of the weights of 14 students in a class is 42 kgs.
Mean weight increases by 600 grams (0.6 kgs) when the teacher's weight is included.
Formula used:
Mean = Total Weight / Number of People
Calculation:
Let the weight of the teacher be T.
Total weight of 14 students = 42 × 14 = 588 kgs
When the teacher is included, the mean weight becomes 42.6 kgs for 15 individuals.
Total weight (including teacher) = 42.6 × 15 = 639 kg
⇒ Teacher's weight (T) = Total weight (including teacher) - Total weight of 14 students
⇒ T = 639 - 588 = 51 kgs
∴ The correct answer is option (4).
Average Weight Question 2:
The average weight of 271 fertilizer bags is 71 kgs. If the weight of the box (in which the fertilizer bags are kept) be included, the calculated average weight per fertilizer bag increases by 0.8 kg. What is the weight of the box? (in kg)
Answer (Detailed Solution Below)
Average Weight Question 2 Detailed Solution
Given:
Average weight of 271 fertilizer bags = 71 kg
Including the weight of the box, the average increases by 0.8 kg
Number of bags = 271
Formula used:
Total weight = Average × Number of items
Weight of the box = (New total weight) - (Old total weight)
Calculation:
Old total weight = 71 × 271 = 19241 kg
New average = 71 + 0.8 = 71.8 kg
New total weight = 71.8 × 271
⇒ New total weight = 19457.8 kg
Weight of the box = New total weight - Old total weight
⇒ Weight of the box = 19457.8 - 19241 = 216.8 kg
∴ The correct answer is option (1).
Average Weight Question 3:
The average weight of 28 students in a class is 52.25 kg, and that of the remaining 12 students is 48 kg. Find the average weight of all the students in the class. (approximately)
Answer (Detailed Solution Below)
Average Weight Question 3 Detailed Solution
Given:
Average weight of 28 students = 52.25 kg
Average weight of 12 students = 48 kg
Total number of students = 28 + 12 = 40
Formula used:
Total weight = Average × Number of students
Overall average = Total weight / Total number of students
Calculation:
Total weight of 28 students = 52.25 × 28 = 1463 kg
Total weight of 12 students = 48 × 12 = 576 kg
Total weight of all students = 1463 + 576 = 2039 kg
Overall average = Total weight / Total number of students
⇒ Overall average = 2039 / 40
⇒ Overall average = 50.975
∴ The correct answer is option 2.
Average Weight Question 4:
The average weight of a kabaddi team of 121 players is 71 kg. If the weight of the manager is included, then the average increases by 1 kg. Find the weight of the manager. (in kg)
Answer (Detailed Solution Below)
Average Weight Question 4 Detailed Solution
Given:
The average weight of a kabaddi team of 121 players = 71 kg
The average weight increases by 1 kg when the manager is included
Formula used:
New average = (Total weight of players + Weight of manager) / (Number of players + 1)
Calculation:
Total weight of the team (players only) = 121 × 71 = 8591 kg
New average weight = 71 + 1 = 72 kg
⇒ (Total weight of players + Weight of manager) / (121 + 1) = 72
⇒ (8591 + Weight of manager) / 122 = 72
⇒ 8591 + Weight of manager = 72 × 122
⇒ 8591 + Weight of manager = 8784
⇒ Weight of manager = 193 kg
∴ The correct answer is option (3).
Average Weight Question 5:
The average weight of P, Q and R is 54 kilograms . If the average weight of P and Q is 48 kilograms and that of Q and R is 49 kilograms , what is the weight of Q? (In Kg)
Answer (Detailed Solution Below)
Average Weight Question 5 Detailed Solution
Given:
Average weight of P, Q, and R = 54 kg
Average weight of P and Q = 48 kg
Average weight of Q and R = 49 kg
Formula used:
Sum of averages = Average × Number of terms
Calculations:
Total weight of P, Q, and R = 54 × 3 = 162
Total weight of P and Q = 48 × 2 = 96
Total weight of Q and R = 49 × 2 = 98
⇒ Weight of Q = weight of (Q + R) + weight of (P + Q) – weight of (P + Q + R)
⇒ Weight of Q = 98 + 96 - 162
⇒ Weight of Q = 32
The correct answer is Option (1).
Top Average Weight MCQ Objective Questions
The average weight of 49 students in a class is 39 kg. Seven of them whose average weight is 40 kg leave the class and other seven students whose average weight is 54 kg join the class. What is the new average weight (in kg) of the class?
Answer (Detailed Solution Below)
Average Weight Question 6 Detailed Solution
Download Solution PDFGiven:
The average weight of 49 students in a class is 39 kg.
Concept used:
Average = Sum of elements/Number of elements
Calculation:
Total weight of the 49 students = 39 × 49
⇒ 1911
According to the question,
New total weight = 1911 - 40 × 7 + 54 × 7
⇒ 1911 - 280 + 378
⇒ 2009
New average = 2009/49
⇒ 41 kg
∴ The new average weight (in kg) of the class is 41.
Shortcut Trick
Seven students of average weight 40 kg leave and Seven students of average weight 54 kg join.
So, net weight gain (54 - 40) × 7 = 98 kg
This extra will be distributed among 49 people, so average will increase 98/49 = 2 kg
The new average weight 39 + 2 = 41 kg
According to Raghav, his weight is more than 64 kg but less than 74 kg. His sister does not agree with Raghav and she thinks that his weight is more than 60 kg but less than 69 kg. His mother's view is that his weight cannot be more than 68 kg. His father's view is that his weight cannot be more than 67 kg. If all are them are correct in their estimation, then what is the average of different probable weights of Raghav measured (in kg)?
Answer (Detailed Solution Below)
Average Weight Question 7 Detailed Solution
Download Solution PDFCalculation:
According to Raghav, his weight is more than 64 kg but less than 74 kg.
i.e. 64 < Weight <74
His sister thinks that his weight is more than 60 kg but less than 69 kg.
i.e. 60 < Weight < 69
His mother's view is that his weight cannot be more than 68 kg
i.e. Weight <= 68.
His father's view is that his weight cannot be more than 67 kg.
i.e. Weight <= 67.
So possible weights are 65, 66, 67
Only possible average is (65 + 66 +67) / 3 = 66kg
∴ The correct option is 1
Ram, Shyam, Rohan, Reeta and Mukesh are five members of a family who are weighed consecutively and their average weight is calculated after each member is weighed. If the average weight increases by 2 kg each time, how much heavier is Mukesh than Ram?
Answer (Detailed Solution Below)
Average Weight Question 8 Detailed Solution
Download Solution PDFGiven:
Ram, Shyam, Rohan, Reeta, and Mukesh are five members of a family who are weighed consecutively and their average weight is calculated after each member is weighed.
The average weight increases by 2 kg each time.
Concept used:
Total = Average × Number of entities
Calculation:
Let the weight of Ram be Q kg.
Average weight = Q kg
According to the question,
After adding Shyam, the average weight = (Q + 2) kg
Weight of Shyam = 2(Q + 2) - Q = (Q + 4) kg
After adding Rohan, the average weight = (Q + 4) kg
Weight of Rohan = 3(Q + 4) - Q - (Q + 4) = (Q + 8) kg
After adding Reeta, the average weight = (Q + 6) kg
Weight of Reeta = 4(Q + 6) - Q - (Q + 4) - (Q + 8) = (Q + 12) kg
After adding Mukesh, the average weight = (Q + 8) kg
Weight of Mukesh = 5(Q + 8) - Q - (Q + 4) - (Q + 8) - (Q + 12) = (Q + 16) kg
Now, Mukesh is heavier than Ram by = (Q + 16) - Q = 16 kg
∴ Mukesh is heavier than Ram by 16 kg.
In a class of 60 students, there are 35 boys. The average weight of boys is 42 kg and the average weight of the full class is 46.5 kg. Find the average weight of girls in the class.
Answer (Detailed Solution Below)
Average Weight Question 9 Detailed Solution
Download Solution PDFGiven:
In a class of 60 students, there are 35 boys.
The average weight of boys is 42 kg and the average weight of the full class is 46.5 kg.
Calculation:
The number of girls will be 60 - 35 = 25
The total weight of the boys is
⇒ 42 × 35 = 1470 kg
The total weight of the full class is
⇒ 60 × 46.5 = 2790 kg
The total weight of the girls is
⇒ 2790 - 1470 = 1320 kg
The average weight of girls in the class is
⇒ 1320 / 25 = 52.80 kg
∴ The correct option is 3
In a class of 60 students, 20 are girls. The average weight of the boys in the class is 40 kg, while that of all the girls is 35 kg. What is the average weight (in kg) of the entire class (correct to two decimal places)?
Answer (Detailed Solution Below)
Average Weight Question 10 Detailed Solution
Download Solution PDFGiven
Total students in the class = 60
Girls = 20
The average weight of the boys = 40 kg
The average weight of the girls = 35 kg
Formula used:
Average = sum of values/total values
Calculation
Let the average weight (in kg) of the entire class be x.
Sum of weight of all boys = 40 × 40 = 1600
Sum of weight of all girls = 20 × 35 = 700
The sum of weight of all classes = 60x
⇒ 60x = 1600 + 700
⇒ 60x = 2300
⇒ x = 38.33 kg
The average weight (in kg) of the entire class is 38.33 kg
The weights (in kg) of five girls of a class are 49, 42, 61, 55 and 58. What is the average weight (in kg) of these five girls?
Answer (Detailed Solution Below)
Average Weight Question 11 Detailed Solution
Download Solution PDFGiven:
The weights (in kg) of five girls in a class are 49, 42, 61, 55 and 58.
Formula used:
Average = sum of observations/Number of observations
Calculation:
According to the question
⇒ (42 + 49 + 61 + 55 + 58)
⇒ 265
Average = 265/5
= 53
∴ The average weight (in kg) of these five girls 53.
The arithmetic mean of the weights of 14 students in a class is 42 kgs. If the weight of the teacher is also included, the mean weight increases by 600 grams. Then the weight of the teacher is
Answer (Detailed Solution Below)
Average Weight Question 12 Detailed Solution
Download Solution PDFGiven:
The arithmetic mean of the weights of 14 students in a class is 42 kgs.
Mean weight increases by 600 grams (0.6 kgs) when the teacher's weight is included.
Formula used:
Mean = Total Weight / Number of People
Calculation:
Let the weight of the teacher be T.
Total weight of 14 students = 42 × 14 = 588 kgs
When the teacher is included, the mean weight becomes 42.6 kgs for 15 individuals.
Total weight (including teacher) = 42.6 × 15 = 639 kg
⇒ Teacher's weight (T) = Total weight (including teacher) - Total weight of 14 students
⇒ T = 639 - 588 = 51 kgs
∴ The correct answer is option (4).
The average weight of 271 fertilizer bags is 71 kgs. If the weight of the box (in which the fertilizer bags are kept) be included, the calculated average weight per fertilizer bag increases by 0.8 kg. What is the weight of the box? (in kg)
Answer (Detailed Solution Below)
Average Weight Question 13 Detailed Solution
Download Solution PDFGiven:
Average weight of 271 fertilizer bags = 71 kg
Including the weight of the box, the average increases by 0.8 kg
Number of bags = 271
Formula used:
Total weight = Average × Number of items
Weight of the box = (New total weight) - (Old total weight)
Calculation:
Old total weight = 71 × 271 = 19241 kg
New average = 71 + 0.8 = 71.8 kg
New total weight = 71.8 × 271
⇒ New total weight = 19457.8 kg
Weight of the box = New total weight - Old total weight
⇒ Weight of the box = 19457.8 - 19241 = 216.8 kg
∴ The correct answer is option (1).
The average weight of a kabaddi team of 121 players is 71 kg. If the weight of the manager is included, then the average increases by 1 kg. Find the weight of the manager. (in kg)
Answer (Detailed Solution Below)
Average Weight Question 14 Detailed Solution
Download Solution PDFGiven:
The average weight of a kabaddi team of 121 players = 71 kg
The average weight increases by 1 kg when the manager is included
Formula used:
New average = (Total weight of players + Weight of manager) / (Number of players + 1)
Calculation:
Total weight of the team (players only) = 121 × 71 = 8591 kg
New average weight = 71 + 1 = 72 kg
⇒ (Total weight of players + Weight of manager) / (121 + 1) = 72
⇒ (8591 + Weight of manager) / 122 = 72
⇒ 8591 + Weight of manager = 72 × 122
⇒ 8591 + Weight of manager = 8784
⇒ Weight of manager = 193 kg
∴ The correct answer is option (3).
The average weight of P, Q and R is 54 kilograms . If the average weight of P and Q is 48 kilograms and that of Q and R is 49 kilograms , what is the weight of Q? (In Kg)
Answer (Detailed Solution Below)
Average Weight Question 15 Detailed Solution
Download Solution PDFGiven:
Average weight of P, Q, and R = 54 kg
Average weight of P and Q = 48 kg
Average weight of Q and R = 49 kg
Formula used:
Sum of averages = Average × Number of terms
Calculations:
Total weight of P, Q, and R = 54 × 3 = 162
Total weight of P and Q = 48 × 2 = 96
Total weight of Q and R = 49 × 2 = 98
⇒ Weight of Q = weight of (Q + R) + weight of (P + Q) – weight of (P + Q + R)
⇒ Weight of Q = 98 + 96 - 162
⇒ Weight of Q = 32
The correct answer is Option (1).