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If a car is travelling from east is running at 50 km/hr and at the same time man is walking from the west at the speed of 5 km/hr. They both are travelling on a 3 km long street. At the time when they cross each other what will be the distance covered by the man?
Given:
A car is travelling from east is running at 50 km/hr and at the same time man is walking from the west at the speed of 5 km/hr.
To do:
We haveto find the distance covered by the man when they cross each other.
Solution:
Let the distance covered by the car when they meet be $x$ km.
This implies the distance covered by the man when they meet $=3-x$ km.
The time taken by both to reach the meeting point will be same.
We know that,
$Time=\frac{Distance}{Speed}$
Therefore,
$\frac{x}{50}=\frac{3-x}{5}$
$\frac{x}{10}=3-x$
$x=10(3-x)$
$x=30-10x$
$10x+x=30$
$11x=30$
$x=\frac{30}{11}$
$x=2.72$ km
$3-x=3-2.72=0.28$ km
The distance travelled by the man is 0.28 km.
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