वरुण आणि आशिष एकत्र एका सभागृहाला 3 दिवसात रंगवू शकतात. वरुण एकटा ते 7 दिवसात रंगवू शकतो. आशिष एकटा अशा 4 सभागृहांना किती दिवसात रंगवू शकतो?

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RRB NTPC Graduate Level CBT-I Official Paper (Held On: 05 Jun, 2025 Shift 1)
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  1. 6.25
  2. 21
  3. 5.25
  4. 22

Answer (Detailed Solution Below)

Option 2 : 21
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RRB NTPC Graduate Level Full Test - 01
100 Qs. 100 Marks 90 Mins

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दिले आहे:

वरुण आणि आशिष एकत्र 1 सभागृह 3 दिवसात रंगवतात

वरुण एकटा 1 सभागृह 7 दिवसात रंगवतो

वापरलेले सूत्र:

कार्य = कार्यक्षमता x वेळ

गणना:

3 आणि 7 चा लसावि (LCM) = 21 एकक (एकूण कार्य)

वरुणचे 1 दिवसाचे कार्य = 21 ÷ 7 = 3 एकक

एकत्रित 1 दिवसाचे कार्य = 21 ÷ 3 = 7 एकक

⇒ आशिषचे 1 दिवसाचे कार्य = 7 - 3 = 4 एकक

1 सभागृह = 21 एकक

4 सभागृह = 4 x 21 = 84 एकक

वेळ = 84 ÷ 4 = 21 दिवस

∴ आशिष एकटा 4 सभागृह 21 दिवसात रंगवू शकतो.

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