Question

20 men can do a piece of work in 30 days after for how many days 5men leave the work so that the entire work will complete in 35 days​

Answer 1

Step-by-step explanation:

total mens' days=20*30=600 days

let 20 men work for 'n' days and left.hence, 20n days

then, 15 men completes the work in (35-n) days.

so, 20n+(35-n)*15=600

or, n=15 days

Answer 2

Answer:

Step-by-step explanation:

Given, 20 men can finish a work in 30 days.

one man can finish work in 1.5 days

Given that 5 men leave the work.

therefore 25 man can complete in

25 × 1.5 = 37.5 days = 35 days (approx)

Given that 5 men leave the work.