Asked by dimpho
A motorist travels a certain distance x in five hours at an average speed of 90km/h.what average speed must she maintain to cover the distance in 4 hours?
Answers
Answered by
Steve
distance = speed * time = 5*90 = 450 km/hr
speed = distance/time = 450/4 = 112.5 km/hr
Or, you can reason like this: 4/5 the time means 5/4 the speed. 5/4 * 90 = 112.5
speed = distance/time = 450/4 = 112.5 km/hr
Or, you can reason like this: 4/5 the time means 5/4 the speed. 5/4 * 90 = 112.5
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.