a car took two hours and 15 minute to travel 198km.If it arrived at its destination at 12:06,find

(a) the time it started its journey

(b) the average speed of the car ,giving your answer in kilometers per hour

Solution:

(a)12:06-2:15 = 9:51

So the time it started its journey is 9:51

(b)

198/2.25 = 88 kmh

So the average speed of the car is 88 km/h