Question

A bus traveled 120 miles in 2.5 hours. After picking up new passengers, it traveled another 105 miles in 2 hours.

What was the average speed of the bus for the entire trip?


Round to the nearest hundredth, if necessary.


48.00 mi/h


50.00 ​mi/h​


50.25 ​mi/h​


52.50 ​mi/h​

Answer 1

Answer: 50.25mi/h

Explanation:

1. You must calculate the average speed in the first part of the trip with the following formula:

`V_1=(d_1)/(t_1)`

Where
`d_1` is the distance in the first part of the trip and
`t_1` is the time in the first part of the trip.

Then:

`V_1=(120mi)/(2.5h)=48mi/h`

2. Now, calculate the average speed in the second part of the trip:

`V_2=(105mi)/(2h)=52.5mi/h`

3. The average speed of the bus for the entire trip:

`V=(V_1+V_2)/(2)=(48mi+52.5mi)/(2)=50.25mi/h`