Question
‘M’ and ‘N’ together can do a piece of work in
50 days. If ‘M’ is 50% more efficient than ‘N’, how long will ‘N’ take to do the work alone?Solution
Let the efficiency of ‘N’ be 10x units. Efficiency of ‘M’ = 10x × 1.5 = 15x units Total work = 50 × (10x + 15x) = 1250x units Time taken by ‘N’ alone = 1250x ÷ 10x = 125 days
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