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Question 49
A and B working together finish a work in 6 hours. A can finish the work in 10 hours. How long will it take for B to finish the same work alone?
Solution
A and B working together finish a work in 6 hours.
Time taken by A alone = 10 hours
=> Time taken by B alone = $$\frac{1}{6}-\frac{1}{10}=\frac{4}{60}=\frac{1}{15}$$
$$\therefore$$ B takes 15 hours to finish the work.
=> Ans - (A)
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