Question

If it would take Billy an hour to race over to his girlfriend’s house and two hours if he went 20 mph slower, how far away does Billy’s girlfriend live?

Answer 1

20

Explanation:

do 20*2=40

Answer 2

40 miles.

Explanation:

You are doubling the amount of time it takes when it's -20 mph, so multiply 20 by 2 to get 40 miles.