two taps can fill a tank in 12 & 15 hours respectively, while the another tap vacates it in 10 hours. if all three taps are opend in the morning at 9:00,10:00,11:00 o'clock respectively, then at what time the tank will be full..........
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2:00 AM next day ...
akanak66:
Kese hoga expln krege
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