Question
P, Q and R take 18, 15 and 10 days respectively to
complete a job. Compare their efficiencies as a ratio.Solution
The time ratio taken by P, Q, and R is = 18:15:10 As we know, Efficiency is inversely proportional to time. Efficiency ratio of P, Q, and R = 1/18: 1/15: 1/10 = 90/18: 90/15: 90/10 = 5:6:9
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