Question

If the distance between Sydney and Goulburn is 200 km, find the average speed to

complete the journey in 2hr 30mins (hint: speed = distance/time).

Answer 1

Average Speed to complete the journey = 80 km/h

Explanation:

Given,

The distance between Sydney and Goulburn = 200 kilometer.

Time to complete the journey = 2 hour 30 minutes

Converting the time into minutes -

2 hour 30 minutes

= (2 x 60) minutes + 30 minutes

= 120 minutes + 30 minutes

= 150 minutes

We know, to determine average speed, we have to divide the distance by time.

Therefore, Speed =
`(Distance)/(Time)`

Speed =
`(200 km)/(150 minutes)`

Speed = 1.33 km/minutes

Speed = (1.33 km x 60) km/hour (To convert it to hour, we have to multiply by 60)

Average Speed per hour = 80 km/h