SOLUTION: Can someone help me solve this?
Type of Problem: Applications of Linear Systems
Solve the problem by using a system of equations.
A Porsche and a VW Bug that were 450 miles ap
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Question 791157: Can someone help me solve this?
Type of Problem: Applications of Linear Systems
Solve the problem by using a system of equations.
A Porsche and a VW Bug that were 450 miles apart traveled toward each other. They met after 5 hours. If one car can travel twice as fast as the other car, what were their speeds?
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
Slow speed, r
Fast speed, 2r
r*t=d
Total time was 5 hours, so t=d/r and the other time would be d/(2r).
?
The amount of time, x, is the same for both cars.
CAR1___________r____________x__________rx
CAR2___________2r___________x__________2rx
Total______________________ 5__________450
------------------------------------------
SYSTEM OF EQUATIONS:
and
------------------------------------------
and
and
Substitution for x gives
for the slow car
Fast car is mph
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