Question

Ali read 5 pages of her book in 7 minutes. At this rate, how long will it take Ali to read 15 pages of her book? A. 21 minutes. B. 17 minutes. C. 14 minutes. D. 12 minutes.

Answer 1

A. 21 minutes

You can use a proportion to solve this

7/5=x/15

Then cross multiply

This will 105=5x

Then simplify

x=21