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1. |
6 pumps of kirlosker can fill a tank in 7 days and 2 similar pumps of USHA can fill the same tank in 18 days. what is the ratio of the efficiency of a kirlosker pump and a USHA pump? |
A. | 0.25486111111111 |
B. | 0.29583333333333 |
C. | 0.32916666666667 |
D. | None of these |
Answer» B. 0.29583333333333 | |