Question

You read 50 pages in an hour. Your sister reads 40 pages in an hour. Explain how to find out how many more pages you read than your sister reads in 1212 hour?

Answer 1

in 12 hours
you read: 50 x 12 = 60 pages
your sister reads: 40 x 12 = 48 pages

60 - 48 = 12 pages 

answer
you read 12 more pages than you sister in 12 hours