Time and Distance | Arithmetic aptitude | Discussion Page

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

$1\frac{1}{5}$ min

$1\frac{1}{20}$ min

$3\frac{1}{5}$ min

$3\frac{1}{15}$ min

$3\frac{1}{25}$ min

Option A

Aditya's speed = 20 km/hr $=\left(20\times\frac{5}{18}\right)$ m/sec $=\frac{50}{9}$ m/sec

Time taken to cover 400m $=\left(400\times\frac{9}{50}\right)$ sec = 72 sec $=1\frac{12}{60}$ min $=1\frac{1}{5}$ min

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