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Best Answer

'Long' ???? 10 miles long!!!!!

However, if you mean 'what is the time period.

Then

Speed = distance / time

Algebraically rearrange

time = distance / speed

Substitute

time = 10 miles/ 20 miles per hopur(mph) =>

time = 1/2 hours = 30 minutes

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lenpollock

Lvl 16
2w ago
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Wiki User

15y ago

1/2 hour

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Q: At 20 mph how long to bike 10 miles?
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