Question

A bicycle moves approximately 7 feet with each revolution of the wheels. If the bicycle wheels are making 30 revolutions per minute, approximately how many feet will the bicycle travel in 1 hour?

Answer 1

`12,600\ ft`

Explanation:

step 1

Find out the number of revolutions in one hour

we know that

The bicycle wheels are making 30 revolutions per minute

One hour are 60 minutes

so

using proportion

`(30)/(1)\ (rev)/(min)=(x)/(60)\ (rev)/(min)\\\\x=60(30)\\\\x=1,800\ rev`

step 2

Find out how many feet the bicycle will travel in one hour

we know that

A bicycle moves approximately 7 feet with each revolution and the number of revolutions in one hour is 1,800

so

Multiply the number of revolutions in one hour (1,800 rev) by 7 feet

`(1,800)7=12,600\ ft`