Number of hours

Question

A small metal shop operates 10 hours each day, producing 100 parts/hour. If productivity were increased 20%, how many hours would the plant have to work to produce 100parts?

Answer 1

Increasing productivity by 20% means they would make 20% more parts per hour or 100•(1 + 0.20) = 120 parts/hr.

If the rate is 120 parts per hour, then use a proportion to solve for the time required to make 100 parts.

120x = 6000

x = 50 minutes