SOLUTION: a jet flies from los angeles to chicago at an average speed of 440 miles per hour. if it returns to los angeles along the same route at an average speed of 360 miles per hour, what

Question 935984: a jet flies from los angeles to chicago at an average speed of 440 miles per hour. if it returns to los angeles along the same route at an average speed of 360 miles per hour, what is its average speed for the entire trip
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39615) (Show Source): You can put this solution on YOUR website!
____________rate_________time________distance
TO__________440__________(___)________d
BACK________360__________(____)_______d

____________rate_________time________________distance
TO__________440__________d/440________________d
BACK________360__________d/360________________d
Totals______________________________2d

Answer is using basic arithmetic.
Answer by MathTherapy(10549) (Show Source): You can put this solution on YOUR website!

a jet flies from los angeles to chicago at an average speed of 440 miles per hour. if it returns to los angeles along the same route at an average speed of 360 miles per hour, what is its average speed for the entire trip

Let distance from LA to Chicago, and vice-versa, be D
Then time taken to travel from LA to Chicago =
Time taken on return trip (Chicago to LA) =
Total time taken on round trip: , or , or , or
Total distance: D + D, or 2D
Total distance divided by total time equals average speed. This translates to:
___________ mph
You can do the check!!
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