‘X’ can finish 50% of a job in 8 days. ‘Y’ takes

Q: Answer-‘X’ can finish 50% of a job in 8 days. ‘Y’ takes 8 days more than ‘X’ to complete the entire work, a...

ATQ, Time taken by X to complete the work 8 0.5 16 days Time taken by Y 16 8 24 days Time taken by Z 24 1.20 28.8 days Let total work 576 units Efficiency of X 576 16 36 unitsday Efficiency of Y 576 24 24 unitsday Efficiency of Z 576 28.8 20 unitsday Work done in 3 days 36 24 20 80 units Work done in 9 days 80 3 240 units Remaining work 576 240 336 units Time by X 336 36 9.33 days Time by Y 336 24 14 days Time by Z 336 20 16.8 days Required 9.33 14 16.8 16.8 100 15 more

8 days more than ‘X’ to complete the entire work, and Y is 20% more efficient than ‘Z’. ‘X’ starts the task alone, on 2nd day he is joined by ‘Y’ only, on 3rd day, he is joined by ‘Z’ only, and on 4th day, he again works alone. They follow this same pattern for 9 days. The combined time taken by ‘X’ and ‘Y’ alone to finish the leftover work is how much percent more/less than that by ‘Z’ alone?

A 10% less

B 15% more

C 25% less

D 32% more

E None of these

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‘X’ can finish 50% of a job in 8 days. ‘Y’ takes

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