Chaman is 50% more efficient than Aman. In how many days can Chaman alone complete the work if Aman and Chaman can complete the work together in 42 days.

70 days

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60 days

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65 days

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55 days

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85 days

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Solution

The correct option is A 70 days
Let the amount of work done by Aman alone in one day be x units.

So, the amount of work done by Chaman alone in one day = 1.5x

So, the total work = 42 × (x + 1.5x) = 105x

Time taken by Chaman to complete the work alone = 105x/1.5x = 70 days

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Chaman is 50% more efficient than Aman. In how many days can Chaman alone complete the work if Aman and Chaman can complete the work together in 42 days.

The correct option is A 70 daysLet the amount of work done by Aman alone in one day be x units. So, the amount of work done by Chaman alone in one day = 1.5x So, the total work = 42 × (x + 1.5x) = 105x Time taken by Chaman to complete the work alone = 105x/1.5x = 70 days

The correct option is A 70 days
Let the amount of work done by Aman alone in one day be x units.

So, the amount of work done by Chaman alone in one day = 1.5x

So, the total work = 42 × (x + 1.5x) = 105x

Time taken by Chaman to complete the work alone = 105x/1.5x = 70 days