Question

If 20 men working 7 hours a day can do a piece of work in 10 days, in how many days will 15 men working for 8 hours a day do the same piece of work?

Answer 1

Answer:

20 men working 7 hrs a day can do it in =10days

1men...........7hrs.......=10*20days

15 men.....................=10*20/15

=40/3 days

15 men working 7 hrs a day can do it in = 40/3 days.

15 men ......1hr ..........=40/3*7days

15 men ........8hrs a day ......=

=40/3*7/8 days

=35/3 days

=33⅔days