A can do a piece of work in 10 days which B alone can do in 12 days. In how many days can both do it working together?

Foundation

Mathematics Foundation

Time Speed Distance

Question

$\frac{60}{11}$ days

11 days

15 days

8 days

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A and B’s one day work = $\frac{1}{10} + \frac{1}{12} = \frac{22}{120} = \frac{11}{60}$

So, number of days required both to working together = $\frac{60}{11}$ days

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