Question

Raina can read 39 pages in

30 minutes. Robert can
read 60 pages in 50
minutes. If they both begin
reading the same 312-page
book, how many more
minutes will Robert take to
finish the book?

Answer 1

Explanation:

Raina takes 30 minutes for 39 pages. So that means she read 1.3 pages per minute. Then we take 312 divided by 1.3 = 240 minutes, she needs to finish the book.

Robert takes 50 minutes for 60 pages. So that means he read 1.2 pages per minute. Then we take 312 divided by 1.2 = 260 minutes.

260mins - 240mins = 20 mins

So Robert will need 20 minutes to finish the book.