Question

How many minutes are spent warming up and cooling down if it takes three tenths and it is part of seven eighths hour class

Answer 1

First of all, find 7/8 of an hour. 60 / 1 times 7/8 = 420/8. 420/8 times 3/7 = 1260/56. That is 22.5, or 22 1/2 minutes.