SOLUTION: Jim's speed for most of his 300 mile road trip was 65 mph. When traveling over icy mountain passes his speed slowed to 40 mph. If the total time of the trip was 5 hours, how many m
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Question 766317: Jim's speed for most of his 300 mile road trip was 65 mph. When traveling over icy mountain passes his speed slowed to 40 mph. If the total time of the trip was 5 hours, how many miles were driven at 65 mph?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
Jim's speed for most of his 300 mile road trip was 65 mph. When traveling over icy mountain passes his speed slowed to 40 mph. If the total time of the trip was 5 hours, how many miles were driven at 65 mph?
***
let x=miles driven at 65 mph
300-x=miles driven at 40 mp
travel time=distance/speed
..
LCD:65*40
40x+65(300-x)=5*65*40
40x+19500-65x=13000
-25x=-6500
x=260
Miles driven at 65 mph=260
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