पाईप A आणि पाईप B एक टाकी x दिवसात भरू शकतात. पाईप A टाकी (x + 4) दिवसात भरू शकते आणि पाईप B टाकी (x + 36) दिवसात भरू शकते. दोन्ही पाईप टाकीचा 1/3 भाग किती दिवसात भरू शकतात?

  1. 8 दिवस
  2. 4 दिवस
  3. 12 दिवस
  4. 10 दिवस

Answer (Detailed Solution Below)

Option 2 : 4 दिवस
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Detailed Solution

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दिलेल्याप्रमाणे:

पाईप A आणि पाईप B एक टाकी भरू शकतात = x दिवस

पाईप A टाकी भरू शकतो = (x + 4) दिवस

पाईप B टाकी भरू शकतो = (x + 36) दिवस.

वापरलेले सूत्र:

एकत्र काम करण्यासाठी लागणारा वेळ = √अतिरिक्त दिवसांचे उत्पादन

गणना:

पाईप A आणि पाईप B टाकी भरू शकतात = √4 × 36

⇒ x = √144

⇒ x = 12 दिवस

∴ दोन्ही पाईप टाकीचा 1/3 भाग भरू शकतात = 12/3 = 4 दिवस

Alternate Method 

पाईप A आणि पाईप B टाकी भरू शकतात = (t1 × t2)/(t1 + t2)

⇒ x = (x + 4) × (x + 36)/(x + 4 + x + 36)

⇒ x(2x + 40) = x2 + 36x + 4x + 144

⇒ 2x2 + 40x = x2 + 40x + 144

⇒ x2 = 144

⇒ x = 12 दिवस

∴ दोन्ही पाईप टाकीचा 1/3 भाग भरू शकतात = 12/3 = 4  दिवस
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