SOLUTION: John drove to his friends house and back. It took 0.3 hours longer to go there than it did to come back. The average speed on the trip there was 44.8 mph. The average speed on the
Algebra.Com
Question 1014881: John drove to his friends house and back. It took 0.3 hours longer to go there than it did to come back. The average speed on the trip there was 44.8 mph. The average speed on the way back was 48 mph. How many hours did the trip there take?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
It took 0.3 hours longer to go there than it did to come back.
The average speed on the trip there was 44.8 mph.
The average speed on the way back was 48 mph.
How many hours did the trip there take?
:
let t = time required to get there
Return trip took .3 hrs less, therefore
(t-.3) = return time
:
Write a distance equation; dist = speed * time
44.8t = 48(t-.3)
44.8t = 48t - 14.4
14.4 = 48t - 44.8t
14.4 = 3.2t
t = 14.4/3.2
t = 4.5 hrs to get there
:
:
:
Check this
Find the actual distance each way, obviously, they should be the same.
4.5 * 44.8 = 201.6 mi
4.2 * 48 = 201.6, (return trip took .3 hrs less)
RELATED QUESTIONS
Jessica drove to her cabin on the lake and back. it took one hour longer to go there than (answered by Alan3354)
Jessica drove to her cabin on the lake and back. it took one hour longer to go there then (answered by josgarithmetic,MathTherapy,ikleyn)
An Air Force plane flew to Jakarta and back. It took six hours longer to go there than... (answered by Earlsdon)
A diesel train traveled to Johannesburg and back. It took 9 hours longer to go there than (answered by ankor@dixie-net.com)
An aircraft carrier travels to Paris and back. It took three hours longer to go there... (answered by josgarithmetic,ikleyn)
Bill traveled to town hall and back. It took three hours longer to go there than it did... (answered by lwsshak3)
A passenger plane flew to Jakarta and back. It took one hour longer to go there than it... (answered by josgarithmetic)
A diesel train traveled to Johannesburg and back. It took one hour longer to go there... (answered by jorel1380)
Jenny drove to her cabin on the lake and back. It took 0.6 hours longer to get there than (answered by lwsshak3)