Question

Two cars leave the same driveway traveling opposite directions. If one car travels 40

miles per hour and the other travels 45 miles per hour, how long until they are 90 miles
apart?

0.94 hours
1.06 hours
1.5 hours

Answer 1

1.06 hours

Explanation:

D=rate*time

r=40,45

d=90

t=idk

40t+45t=90

85T=90

-now divide both sides by 85

85T/85=T

90/85=1.06

SO t=1.06 HOURS