SOLUTION: Jermaine took a bus trip to visit his grandmother. His round trip travel time was 2 1/2 hours If the bus averaged 45 miles per hour going to his grandmother�s house and 30 miles pe

Question 310001: Jermaine took a bus trip to visit his grandmother. His round trip travel time was 2 1/2 hours If the bus averaged 45 miles per hour going to his grandmother�s house and 30 miles per hour on the return trip, how many miles from his grandmother�s house does Jermaine live?

Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
His round trip travel time was 2 1/2 hours.
If the bus averaged 45 miles per hour going to his grandmother�s house and 30
miles per hour on the return trip,
how many miles from his grandmother�s house does Jermaine live?
:
Let d = distance from grandma's house
:
Write a time equation; time = dist/speed
:
"to trip" + return trip = 2.5 hrs
+ = 2.5
multiply equation by 90 to get rid of the denominators, results
2d + 3d = 2.5(90)
5d = 225
d =
d = 45 mi to grandma's
:
;
Check solution by finding the times
45/45 = 1.0
45/30 = 1.5
-------------
total: 2.5
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