Question

A car leaves station $X$ for station Y every 10 min. The distance between $X$ and Y is 60 km. The car travels at a speed of 60 km/h. A man drives a car from Y station towards $X$ station at speed 60 km/h. If he starts at the moment when one of the car leaves station $X$ how many cars would be meet on route?

• A. 10
• B. 11
• C. 20
• D. 21

Answer 1

Answer: (B)

Speed of every car is 60 km/h Distance between two stations = 60 km Time taken by car to reach the other station $=\frac{60}{60}=1h=60\min$ Number of car leaving the station $X$ in 60 min $=\frac{60}{10}=6$ When 1st car reaches the station Y the car sixth just starts its journey. The car Y will encounter the number of cars coming from X in route $=6+5=11$ .