Question

A car has an average speed of 70.9km/h for one hour, then an average speed of 91.3km/h for two hours during a three hour car trip. What was the average speed for the three hour trip?

I know there's a formula I need to use, but I can't seem to find which one.

Answer 1

@Decarr432

Answer 2

Would I just use v = d/t?

Answer 3

I do believe so

Answer 4

So it would be (70.9 + 91.3 + 91.3)/3?

Answer 5

Lets try it!

Answer 6

Yep, that was right :) thank you!