Question

Lisa takes 27 minutes to run 3 miles.

C. At this rate, how many miles will Lisa have run after 45 minutes?
D. At this rate, how long would it take Lisa to run 7 miles?

Answer 1

C 5 miles

D 63 Minutes

Explanation:

Make a proportion and solve for the number that you do not know

`(miles)/(minutes)` =
`(miles)/(minutes)`

`(27)/(3)` =
`(45)/(x)` See how 27 divide by 9 is 3? Divide 45 by 9 to get 5

`(27)/(3)` =
`(x)/(7)` This time, see how 3 x 9 is 27, so 7 x 9 is 63