Question

suppose that you drive to your spring break destination at a steady 60 miles per hour and return at a stedy 40 miles per hour. whats your average speed for the round trip?

Answer 1

average = total distance / total time

Answer 2

Alright let's work this out in detail.
Let's assume the total distance to be s miles.
time taken to travel is given by: total distance/ velocity.
Here, while going it is: s/60 hours
While coming back it is s/40 hours.

Answer 3

Now, total time, is s/60+s/40 which is s/24 hours.

Answer 4

Total distance is 2s.

Answer 5

Taking total distance by total time, you have 2s/(s/24) which is, 2*24. Which is 48mph.

Answer 6

I hope that helped.

Answer 7

THANKS :)