Question

Kelly read 30 pages of her 300-page book in 6 hours. At this rate, how long will it take her to read the entire book?

Answer 1

It will take Kelly 25 hours to read her 300 paged book

Answer 2

First you set up a proportion (30/6 = 300/x)
Then you cross multiply (6*300) (30*x)
1800 = 30x

Then you'll divide 30 to each side (1800/30)
x=60
It'll take her 60 hours to read the entire book