A letter carrier can deliver mail to 112 homes per hour by walking and 168 homes per hour by driving.

Question1: By what percent is productivity increased by driving?

Question2: If a new ZIP Code system improves driving productivity by 12.5%, what is the new number of homes per hour for driving?

1 answer

(168 - 112) / 112 = ?
Multiply the answer by 100.

168 * 0.125 = ?