alleryपाईप्स एक टाकी 8 आणि 12 तासांत भरतात. दोन्ही 2 तासांसाठी उघडे ठेवले जातात, नंतर पहिला पाईप बंद केला जातो. दुसऱ्या पाईपाला आणखी किती वेळ लागेल?
A6 तास
B9 तास
C7 तास
D8 तास
Answer & Solution
Correct answer: C. 7 तास
दोन तासांत 2 x 5/24 = 5/12 भरते; उरलेला 7/12 भाग 1/12 प्रति तास या दराने भरण्यासाठी 7 तास लागतात.
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