Question
Download Solution PDFWhich two signs should be interchanged to make the given equation correct?
95 * 5 + 19 ÷ 2 − 21 = 36
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven statement : 95 * 5 + 19 ÷ 2 − 21 = 36
According to the question, after interchanging the signs:
So,
- Option - (1) : ÷ and *
Given statement : 95 * 5 + 19 ÷ 2 − 21 = 36
95 ÷ 5 + 19 × 2 − 21 = 36
19 + 19 × 2 − 21 = 36
19 + 38 - 21 = 36
57 - 21 = 36
36 = 36 (LHS = RHS)
- Option - (2) : + and -
Given statement : 95 * 5 + 19 ÷ 2 − 21 = 36
After interchanging:
95 × 5 - 19 ÷ 2 + 21 = 36
95 × 5 - 9.5 + 21 = 36
475 + 21 - 9.5 = 36
496 - 9.5 = 36
486.5 ≠ 36 (LHS ≠ RHS)
- Option - (3) : ÷ and −
Given statement : 95 * 5 + 19 ÷ 2 − 21 = 36
After interchanging:
95 × 5 + 19 - 2 ÷ 21 = 36
95 × 5 + 19 - 0.095 = 36
475 + 19 - 0.095 = 36
494 - 0.095 = 36
493.9 ≠ 36 (LHS ≠ RHS)
- Option - (4) : + and *
Given statement : 95 * 5 + 19 ÷ 2 − 21 = 36
After interchanging:
95 + 5 × 19 ÷ 2 − 21 = 36
95 + 5 × 7.5 - 21 = 36
95 + 37.5 - 21 = 36
132.5 - 21 = 36
111.5 ≠ 36 (LHS ≠ RHS)
Hence, "Option - (1)" is the correct answer.
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