Question 70

Rama and Hari can together finish a piece of work in 15 day. Rama works twice as fast as Hari, then Hari alone can finish work in :

Solution

Let Hari take x days to do a job

Then Ram takes $$\frac{x}{2}$$ days

Per day they work together $$\frac{1}{x}+\frac{2}{x} =\frac{3}{x} $$

In 15 days they do $$\frac{x}{(3\times 15)} $$ of work

$$\frac{x}{45}$$=1

x=45

Hari takes 45 days

Option A is correct.

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