Question

‘A’ alone can do some work in 10 days. ‘B’ and

Q: ‘A’ alone can do some work in 10 days. ‘B’ and ‘C’ together can do the same work in 4 da

Letthetotalworkbe20unitsLCM10and4SoefficiencyofA20102unitsdaySoefficiencyofB2x051unitdayEfficiencyofBandCtogether2045unitsdaySoefficiencyofC514unitsdaySotimetakenbyCtofinishtheworkalone2045days

‘C’ together can do the same work in 4 days. If ‘B’ is half as efficient as ‘A’, then find the time taken by ‘C’ to complete the work alone.

A 5 days

B 4 days

C 7 days

D 10 days

E None of these

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‘A’ alone can do some work in 10 days. ‘B’ and

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