Question

2 people A and B travel from x and y talong different routes.Their journeys take the same amount of time

Answer 1

Question:

2 people A and B travel from X to Y along different routes. Their journeys take the same amount of time. B's route is 100km at an average speed of 40km/hour A's route is 60km. What is A's average speed?

Answer:

Person A's average speed is 24km/hr

Explanation:

Given

Person B

`Distance = 100km`

`Speed = 40km/hr`

Person A

`Distance = 60km`

Required

Average speed of person A

Speed is calculated as:

`Speed = (Distance)/(Time)`

For person B

`40 = (100)/(Time)`

Make Time the subject

`Time= (100)/(40)`

`Time= 2.5hr`

For person A

`Speed = (Distance)/(Time)`

`Speed = (60)/(Time)`

The journeys last for the same duration.

So;

`Speed = (60)/(2.5)`

`Speed = 24`

Person A's average speed is 24km/hr