Question

Two friends leave their houses at the same time and run across town towards each other. The first friend runs at a speed of 8 miles per hour. The second friend runs at a speed of 7 miles per hour. If they left at 6 p.m. and their houses are 20 miles apart, at what time will they meet?

Answer 1

2 and a half hours estimate

Answer 2

7:20 PM.

Explanation:

7mph+8mph=15mph

It at least has to be 1 hour(since 15 is one hour and we need 20)

double 15 and we get 30.

if you count by fives starting from 15 to 30, you should get 3.

Now, divide 60 to 3 and you get 20 min.

So, 1 hour plus 20 min is 7:20