Question

28. A constructor wants some men and boys to build the temple as it has to be completed in one month. 2
men and 7 boys can do a piece of work in 4 days. It is done by 4 men and 4 boys in 3 days. How long
would it take for one man or one boy to do it?
10
​

Answer 1

Explanation:

Let the man can finish the work in x days and the boy can finish the same work in y days.

Work done by one man in one day = 1/x .....(i)

and work done by one boy in one day = 1/y .....(ii)

On Multiplying eqn. (iii) by 2 and subtract eqn. (iv) from it

Hence, one man can finish it in 5 days and boy in 60 days