If a alone does the work in 15 days, how much time will they take working together to complete the job, if a is 30 % more efficient than b?
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Simple. 13 days.How?
Well here goes,
A is 30% more efficient than B : A + 0.3A =1.3A
Work done by A in one day: 1/23
Work done by B in one day: 1/(1.3*23) = 1/29.9
Work done by A+B in one day: 1/23 + 1/29.9 = 1/13
If both of them worked together, it would take them 13 days.
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