Question
Sam alone can complete a work in 60 days. Arun is three
times as efficient as Sam. Find the percentage of work completed by Sam and Arun together in 15 days.Solution
ATQ,
Let the efficiency of Sam = x units/day
Total work = 60x units
Efficiency of Arun = x × 3 = 3x units/day
Work done by Sam and Arun together in 15 days = (x + 3x) × 15 = 60x units
Percentage of work done = (60x / 60x) × 100 = 100%
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