Question

A boy runs a distance of $16$ km in $1\frac{1}{3}$ hrs, find his speed in m/sec.

• A. $1\frac{2}{3}$ m/sec
• B. $2\frac{2}{3}$ m/sec
• C. $3\frac{1}{3}$ m/sec
• D. $5\frac{2}{3}$ m/sec

Answer 1

Answer: (C)

$3\frac{1}{3}$ m/sec

By using formula, Speed $=\frac{Distance}{Time}$

Given, $Time=1\frac{1}{3}hr=\frac{4}{3}$hr

Distance $=16$km

$\therefore$ Speed $=\frac{16}{4/3}=12$ km/hr

$=\frac{12\times 1000}{60\times 60}$

$=\frac{10}{3}$

$=3\frac{1}{3}m/sec$