SOLUTION: two cars traveled in opposite directions starting from the same starting point. The rate of one car was 10km/h faster than the rate of the other car.After 4 hours the cars were 460

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Question 315041: two cars traveled in opposite directions starting from the same starting point. The rate of one car was 10km/h faster than the rate of the other car.After 4 hours the cars were 460km apart. find each car's rate.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Rate*Time=Distance
R1%2AT=D1
R2%2At=D2
.
.
R2=R1%2B10
.
.
.
T=4
.
.
.
Start with the distance equation,
D1%2BD2=460
Substitute,
R1%2A4%2B%28R1%2B10%29%2A4=460
Divide by 4
R1%2BR1%2B10=115
2R1%2B10=115
2R1=105
R1=52.5 kph
R2=62.5 kph