Question

The driver of car is traveling at a speed of 36 kmph and spots a bus 80 metres ahead of him. After 1 hour the bus is 120 metres behind the car. What is the speed of the bus?

Answer 1

Speed of the car = 36 kmph 

Speed of the bus = x kmph 

Relative speed = (36 – x) kmph 

Distance = 200m 

Bus by 120m

∴ t = \(\frac{200}{36 - x}\)

1 = \(\frac{200}{(36 - x)1000}\)

36 – x = 0.2 36 -0.2 = x 

x = 35.8 

∴ Speed of the bus is 35.8 kmph.