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Q.
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.
6:7
B.
7:6
C.
2018-02-20 07:54:00
D.
None of these
View Answer
Correct choice: A
Explanation:
The number of days required by a single kirlosker pump to fill the tank = 6 x 7 =42 days and the number of days required by a single USHA pump to fill the same tank = 2 x 18 =36 days. Now , since efficiency is inversely proportional to the number of days. Hence, Efficiency of one K − pump/Efficiency of U− pump=36/42=6/7
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