Question 12
Ratio, Percentages and RatesThe diagram below is the distance-time graph of a vehicle. Find its average speed in kilometres per hour during the journey.
- A.50km/hr
- B.40km/hr
- C.155km/hr
- D.124km/hr
- E.84km/hr.
Show the answer and explanation
Answer: E (84km/hr.)
Explanation
The distance goes from 50km to 155km, i.e. 105km, in 75 minutes = 1.25 hours. Average speed = 105 ÷ 1.25 = 84km/hr.