Question
X can finish a task in 20 days, while Y can do it in 25
days. If Z needs 1.2 times the time taken by X and Y together, find the number of days Z will take to complete the same task.Solution
ATQ,
Time taken by X and Y together to complete the work = (20 × 25)/ (20 + 25) = 11.11 days
Time taken by Z alone to complete the work = 1.2 × 11.11 = 13.33 days
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