Question

A bus travels with speed 40 km h−1 for 2 hours and then with speed 50 km h−1 for 30 minutes. Find:
i) the total distance travelled by the bus
ii) the total time of travel
iii) the average speed of bus (Express in km h −1

Answer 1

I) total distance travel by the bus = 40kmh-1+50kmh-1=90kmh-1

ii) total time travel = 2h30min

iii) average speed of bus = total distance/ total speed

90kmh-1/2.50

90 ×10 kmh-1/ 250

900/250

90/25

3.6 km h-1