Question

The temperature fell from 0 degrees to 6 3/5 degrees below 0 in 2 1/5 hours. what was the temperature change per hour?

Answer 1

divide 6 3/5 by 2 1/5

6 3/5 = 33/5

2 1/5 = 11/5

33/5 / 11/5 = 3

the temperature dropped 3 degrees per hour