Question
Meena alone can complete a work in 20 days. Ritu is twice
as efficient as Meena. Find the percentage of work completed by Meena and Ritu together in 4 days.Solution
ATQ,
Let the efficiency of Meena = x units/day
Total work = 20x units
Efficiency of Ritu = x × 2 = 2x units/day
Work done by Meena and Ritu together in 4 days = (x + 2x) × 4 = 12x units
Percentage of work done = (12x / 20x) × 100 = 60%
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