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# What was the total driving time trip for 80 miles per hour one way to Phoenix and averaged 70 miles per hour and it took one hour longer to drive back home than Phoenix?

Updated: 12/10/2022

Wiki User

11y ago

Best Answer

Suppose the one-way distance is X miles.

The outward time = Distance/Outward speed = X/80 hours.

The return time = Distance/Return speed = X/70 hours.

The second journey was 1 hour longer, so X/70 - X/80 = 1

Multiply by 560: 8X - 7X = 560 so that X = 560.

Then outward time = 560/80 = 7 hours

return time = 560/70 = 8 hours

and

total time = 7 + 8 = 15 hours.

Wiki User

11y ago
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Q: What was the total driving time trip for 80 miles per hour one way to Phoenix and averaged 70 miles per hour and it took one hour longer to drive back home than Phoenix?
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