SOLUTION: Car A travels 180 miles in the same time it takes Car B to travel 120 miles. If one car is going 20 mph faster than the other car, find both speeds?
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Question 255713: Car A travels 180 miles in the same time it takes Car B to travel 120 miles. If one car is going 20 mph faster than the other car, find both speeds?
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
st=d
A) (s+20)t=180
B) st=120
.
180/(s+20)=120/s
180s=120(s+20)
180s=120s+2400
3s=2s+40
s=40 mph
s+20=60mph
.
Ed
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