Q:
A tap can fill a tank in 6 hours. After half the tank is filled, three more similar taps are opened. What is the total time taken to fill the tank completely?
Answer & Explanation
Answer: B) 3 hrs 45 min
Explanation: Time taken by one tap to fill half of the tank = 3 hrs.
Part filled by the four taps in 1 hour =4*1/6 =2/3
Remaining part =
=> x =
So, total time taken = 3 hrs. 45 mins.
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