Question

a person bikes 2 1/2 miles at constant rate in 1/8 of an hour what distance , in miles , does the person bike in an hour

Answer 1

Answer: The person bike 20 miles in an hour.

Explanation:

Given: At a constant speed, a person travels
`2\frac12` miles in
`\frac18` hour.

As
`2\frac12=(2*2+1)/(2)=(5)/(2)`

So, in
`\frac18` hour, distance traveled =
`\frac52` miles

As time and distance are proportional, Multiply 8 om both sides , we get

In 1 hour, distance traveled =
`\frac52*8` miles

`=5*4` miles= 20 miles

Hence, the person bike 20 miles in an hour.