Q8a) Find the average speed.
Average speed = Total Distance Travelled/Total Time Taken
= 360km/4 1/2h
Q8b)Find the petrol consumption rate.
Petrol Consumption Rate = 360km/37.5 l
Q8c) Distance Travelled on the highway= speed X time
= 110km/h x 2h
Remaining Distance = 360km-220km
Remaining Time = 4 1/2h - 2h
= 2 1/2h
Average sped for the remaining part of journey = Total Distance Travelled/Total Time Taken
= 140km/2 1/2h
Mavis Cheng S1-01