Question

If 12 workers can build a wall in 50 hours, how many workers will be required to do the same work in 40 hours?

Answer 1

Number of workers = 12

Number of hours = 50

since 12 workers - 50 hours

1 worker - x hours

12x = 50

x = 50/12

x= 4.16666 hours

since 1 worker works for 4.166666

therefore x workers - 40 hours

4.1666666x = 40

x = 9.60

x approximately 10.

Therefore 10 people will work for 40 hours