SOLUTION: two cars leave a parking lot and travel in opposite directions. One travels at 10 miles per hour and the other travels at 5 miles per hour. In how many hours will the two cars be 4

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: two cars leave a parking lot and travel in opposite directions. One travels at 10 miles per hour and the other travels at 5 miles per hour. In how many hours will the two cars be 4      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


   



Question 837111: two cars leave a parking lot and travel in opposite directions. One travels at 10 miles per hour and the other travels at 5 miles per hour. In how many hours will the two cars be 45 miles apart?
Answer by josgarithmetic(39615) About Me  (Show Source):
You can put this solution on YOUR website!
Their separation rate is 10+5 miles per hour.
10+5=15 mph.

R%2AT=D
T=D%2FR
-
T=45%2F15=3
Three hours