Question
Tap A and Tap B fill a drum of volume 357 liters in 17
minutes. If their efficiencies are in the ratio x:y respectively and B alone takes to fill the cistern 35.7 minutes. Find x-y.Solution
A+B B Time 17 : 35.7 Efficiency 35.7 : 17 21 : 10 Efficiency of A+B = 21 Efficiency of B = 10 Efficiency of A = 21 – 10 = 11 Ratio = x:y = 11:10 So, x – y = 11 – 10 = 1
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