SOLUTION: While driving to Fullerton, Mrs. Summer travels at an average speed of 40 mph. On the return trip, she travels at an average speed of 56 mph and saves two hours of travel time. How

Algebra ->  Inequalities -> SOLUTION: While driving to Fullerton, Mrs. Summer travels at an average speed of 40 mph. On the return trip, she travels at an average speed of 56 mph and saves two hours of travel time. How      Log On


   

Question 180890This question is from textbook Algebra 1
: While driving to Fullerton, Mrs. Summer travels at an average speed of 40 mph. On the return trip, she travels at an average speed of 56 mph and saves two hours of travel time. How far does Mrs. Summer live from Fullerton? This question is from textbook Algebra 1

Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
Let t = time driving at 40 mph
then
t-2 = time driving at 56 mph
.
Applying distance formula:
d = rt
.
40t = 56(t-2)
40t = 56t-112
16t = 112
t = 7 hours
.
Distance then is:
40t = 40(7) = 280 miles