Question

Blake burns 4 1/2 calories in 2/3of a minute riding his bike.what is Blake's unit rate?

Answer 1

we are looking for the calories per minute....calories/minute.....

(4 1/2) / (2/3) =
(9/2) / (2/3) =
9/2 * 3/2 =
27/4 =
6 3/4 (or 6.75) calories per minute <==

Answer 2

4 1/2 divided by 2 is 2 1/4 so now we know that Blake burns 2 1/4 calories per 1/3 of a minute if we are trying to find a unit rate it needs to be every minute so 2 1/4 multiplied by 3 would be 6 3/4 every ( 1/3 x 3 = 1 minute)
The answer is 6 3/4 calories a minute