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 1/2 hour?
a. i know that 50 • 40 = 2,000, so i read 1,000 more pages than my sister reads in 1/2 hour.
b. i know that 50 ÷ 40 = 5454, 5 ÷ 4 = 1 1/4, so i read 1 1/4 more pages than my sister reads in 1/2 hour.
c. because i read 10 more pages than my sister reads in 1 hour, i read 5 more pages in 1/2 hour.
d. since 5 • 4 = 20, i read 20 more pages than my sister reads in 1/2 one half hour.