Question

Travel Time

A company president flew 680 miles one way in the corporate jet but returned in a smaller plane that could fly only half as fast. If the total travel time was 6 hours, find the speeds of the planes.

how would I set up this problem?

Answer 1

low speed = s
then high speed = 2s
time at low speed = 680/s
time at high speed = 680/2s = 340/s
so
680/s + 340/s = 6
1020 = 6 s
s = 170
2s =

Answer 2

thank you

would you take the 170 and multiply it by 2 to get the answer?

Answer 3

yes