Question

if 30 womens working 7 hours a day can finish a piece of work in 18 days,how many days would 21 womens working 6 hours a day take? ​

Answer 1

From the problem:

women× days×hours =30×18×7.

let N be the days needed for 21 women working for 6 hour

then,

women×hours×days = 21×6×N

=>30×18×7= 21×6×N

N=(30×18×7)/(21×6) = 30 days.

:. N=30 days