SOLUTION: A train covers its outward journey at 102 mph. It returns over same distance at 34 mph. What is the average speed of the train over the whole journey?

Question 1072396: A train covers its outward journey at 102 mph. It returns over same distance at 34 mph. What is the average speed of the train over the whole journey?
Found 2 solutions by josgarithmetic, Alan3354:
Answer by josgarithmetic(39621) (Show Source): You can put this solution on YOUR website!

Total time,
Total distance,

Average rate of the whole journey,

Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
A train covers its outward journey at 102 mph. It returns over same distance at 34 mph. What is the average speed of the train over the whole journey?
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Avg = 2*102*34/(102+34) = 51 mi/hr
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It's similar to parallel resistors, parallel flows and parallel work.

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