Question

A piece of work can be done by 2 men and 5 boys in 5 days rd of
the work can be done by 3 men and 4 boys in 3 days. How long will it
be required by 9 men to do the same work?​

Answer 1

Answer:

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Step-by-step explanation:

Let m be men, and b be boys. Then:

2m+5b=1/5 (Since it takes them 5 days to finish)

and

3m+4b=1/3 x 1/3 (They do 1/3 of the work in 3 days)

=1/9

10m+25b=1

27m+36b=1

Solve for m