4 man can complete a piece of work in 2 days. 4 wonen can
complete the same piece of work in 4 days whereas 5 children
can complete the same piece of work in 4 days. If, 2 men, 4
women and 10 children work together, in how many days
can the work be completed ?

Options

A. 1 day
B. 3 days
C. 2 days
D. 4 days

Answer

(a)

Explanation

`4xx 2` men= `4xx4` women `= 5xx4` chidren
`rArr 2 ` men = 4 women = 5 children
`therefore` 2 men + 4 women + 10 children
= 20 children
`therefore M_(1)D_(1) =M_(2)D_(2)`
`rArr5xx4=20xxD_(2) rArr D_(2)=1 day`