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Time and Speed

It took Tim, ...

Question

It took Tim, 1480 s and 1500 s to finish a lap in two separate racetracks respectively, while driving at a constant speed. If the first track measured 14.8 km, what would be the length of second track?

A

15 km

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B

14 km

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C

15.1 km

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D

15.5 km

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Solution

The correct option is A 15 km
Speed in first track = $\frac{14800 m}{1480 s}$ = $10 m s^{- 1}$
Length of second track = speed $\times$ time taken = 10 $\times$ 1500 = 15000 m = 15 km

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