SOLUTION: A car leaves Manila, heading toward a resort, at an average speed of 60 miles per hour. On a parallel track, another car leaves Manila a half hour later and travels at an average s

Question 220937: A car leaves Manila, heading toward a resort, at an average speed of 60 miles per hour. On a parallel track, another car leaves Manila a half hour later and travels at an average speed of 90 milers per hour. At what point will Car B pass car A?
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
A car leaves Manila, heading toward a resort, at an average speed of 60 miles per hour. On a parallel track, another car leaves Manila a half hour later and travels at an average speed of 90 milers per hour. At what point will Car B pass car A?
.
Apply the distance formula:
d = rt
where
d is distance
r is rate or speed
t is time
.
Let x = time traveled
then
"distance traveled by car A" = 60x
"distance traveled by car B" = 90(x-.5)
.
Car B will pass car when their distance are equal:
60x = 90(x-.5)
60x = 90x-45
45 = 30x
45/30 = x
1.5 hours = x
(time Car B will pass Car A)

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