Question

Karl rides his bicycle 120 feet in 10 seconds. How many feet does he ride in 1 minute

Answer 1

720

Explanation:

120/10 to find his feet per second which is 12 feet per second

12*60

since there are 60 seconds in a minute

= 720

Answer 2

A minute is 6 times as long as 10 seconds, so we expect Karl will ride 6 times as far.

`(120\,ft)/(10\,s)=(120\,ft)/(10\,s)\cdot(60\,s)/(1\,min)=(720\,ft)/(1\,min)`

Karl rides 720 ft in 1 minute.