How many minutes does Aditya take to cover a distance $400$ m, if he runs at a speed of $20$ km/ hr?

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Solution

Aditya's speed $= 20$ km/hr $= (20 \times \frac{5}{18})$ m/sec = $\frac{50}{9}$ m/sec.
Time taken to cover $400$ m
$= (400 \times \frac{9}{50})$ sec $= 72$ sec $= 1 \frac{12}{60} m i n = 1 \frac{1}{5}$ min

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How many minutes does Aditya take to cover a distance 400m, if he runs at a speed of 20km/ hr?

Aditya's speed =20 km/hr =(20×518) m/sec = 509 m/sec.Time taken to cover 400 m =(400×950) sec =72 sec =11260min=115 min

How many minutes does Aditya take to cover a distance $400$ m, if he runs at a speed of $20$ km/ hr?

Aditya's speed $= 20$ km/hr $= (20 \times \frac{5}{18})$ m/sec = $\frac{50}{9}$ m/sec.
Time taken to cover $400$ m
$= (400 \times \frac{9}{50})$ sec $= 72$ sec $= 1 \frac{12}{60} m i n = 1 \frac{1}{5}$ min