Question

The time required to complete a job varies inversely as the number of

people working. It took 22 painters 494 hours to paint a wall. How long
would it have taken 19 people to have done the job?

Answer 1

494/22= 22.45

~ It took one person 22.45 hours to paint a wall

Therefore, the amount of time 19 people would do the job is

= 22.45 × 19

= 426.63 hours or 427 hours 3 minutes