SOLUTION: A remote-control car races straight down the street at 18 feet per second. Two seconds later, a second remote-control car races straight down the same street at 36 feet per second.
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Question 958757: A remote-control car races straight down the street at 18 feet per second. Two seconds later, a second remote-control car races straight down the same street at 36 feet per second. How long will it take the second car to catch up to the first car?
You can put this solution on YOUR website! A remote-control car races straight down the street at 18 feet per second. Two seconds later, a second remote-control car races straight down the same street at 36 feet per second. How long will it take the second car to catch up to the first car?
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slower car DATA:
rate = 18 ft/sec ; time = t seconds ; distance = 18t ft
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faster car Data:
rate = 36 ft/sec ; time = t-2 seconds ; distance = 36(t-2) ft
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Equation:
distance = distance
18t = 36t-72
18t = 72
t = 4 seconds
Ans: t-2 = 2 seconds
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Cheers,
Stan H.
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