Steve and his daughter went on a 30-mi backpacking trek in Yosemite National Park. They hiked 7.7 mi the first day, 6.4 mi the second day, and 8.0 mi the third day. How much farther did they have to go?
Apr 3, 2018
First you add how far they've already hiked. To do that you add 7.7, 6.4, and 8. When you do that, you get 22.1. Then you subtract that from 30 and get 7.9