Question
Download Solution PDFएकत्र काम केल्याने, A आणि B पाईप 10 तासांत रिकामी टाकी भरू शकतात. त्यांनी 4 तास एकत्र काम केले आणि नंतर B थांबला आणि A ने टाकी भरेपर्यंत भरत राहिली. टाकी भरण्यासाठी एकूण 13 तास लागले. A ला एकट्याने रिकामी टाकी भरायला किती वेळ लागेल?
Answer (Detailed Solution Below)
Detailed Solution
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एकत्र काम केल्यास, A आणि B पाईप 10 तासांत रिकामी टाकी भरू शकतात,
⇒ 1/A + 1/B = 1/10
त्यांनी एकत्र 4 तास काम केले आणि नंतर A चालू राहिले आणि 13 तासात काम पूर्ण झाले,
याचा अर्थ A ने 13 तास काम केले.
⇒ (4/A + 4/B) + 9/A = 1
⇒ 4/10 + 9/A = 1
∴ A = 15 तास
Alternate Method
टाकी भरण्यासाठी A आणि B = 10 तास = एकूण कामाच्या 100% वेळ लागतो
A आणि B ने 4 तास एकत्र काम केले = एकूण कामाच्या 40%
तर, शिल्लक कामाचे 6 तास= एकूण कामाच्या 60%
एकट्या A ने केलेले काम = 13 - 4 = 9 दिवस
60% काम A द्वारे 9 दिवसात केले जाते
100% काम = (9/60) × 100 = 15 दिवस
∴ काम पूर्ण करण्यासाठी A ला लागणारा वेळ 15 दिवस आहे
Last updated on Jun 11, 2025
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