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Speed

A boy travels...

Question

A boy travels with an average speed of $10 m s^{- 1}$ for $20 m i n$ . How much distance does he travel?

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Solution

Given, Average speed $= 10 m s^{- 1}$
Time taken $= 20 min = 1200 sec$
To find, Distance covered:

$Average speed = \frac{Total distance covered}{Time taken}$

$Total distance covered = Average speed \times Time taken$
$= 10 m s^{- 1} \times 1200 s$
$= 12000 m = 12 k m$
The distance travelled by boy is $12 k m$ .

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