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?
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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.