Bunuel wrote:
A water pump began filling an empty swimming pool with water and ran at a constant rate til the swimming pool was full. At sometime, the pool was 1/2 full, and 7/3 hours later, it was 5/6 full. How many hours would it take the pump to fill the empty pool completely?
(A) 4
(B) 16/3
(C) 7
(D) 36/5
(E)25/3
Given:
1. A water pump began filling an empty swimming pool with water and ran at a constant rate til the swimming pool was full.
2. At sometime, the pool was 1/2 full, and 7/3 hours later,
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