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. 7:54 D. None of these Answer Workspace Report Discuss Answer with explanation Answer: Option A Explanation Workspace
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