Question

Two boys start running together from the same place at the speed of $6$ km/hr and $4$ km/hr . Find the distance between them after $6$ minutes, if they run in the same direction.

• A. $0.1$ km
• B. $0.05$ km
• C. $0.2$ km
• D. $0.07$ km

Answer 1

Answer: (C)

$0.2$ km

$Speed=\frac{Distance}{Time}$

$6minutes=\frac{6}{60}hr=\frac{1}{10}hr$
Distance travelled by Boy 1 $=Speed\times Time=6\times \frac{1}{10}=\frac{3}{5}km$
Distance travelled by Boy 2 $=Speed\times Time=4\times \frac{1}{10}=\frac{2}{5}km$
Difference between them $=\frac{3}{5}-\frac{2}{5}=\frac{1}{5}km=0.2km$

Hence, option C is the correct answer.