Mary can read 22 pages in 30 minutes. How long would it take her to read a 100 page book?

Question

please help

Answer 1

This is a proportions problem:

 

22 pages → 30 minutes

100 pages → x minutes

 

The proportion is 

 

22/100 = 30/x

 

Then

 

x = (100/22)(30) minutes = 136.4 minutes.