Karen read 20 pages of her book in a half hour. If she reads for 3 hours at that same rate, about how many pages of her book can Karen read?

1 Answer
May 10, 2018

120 pages

Explanation:

to 20 pages in 1/2 an hour

:. 40 pages in 1 hour

So, if Karen reads 40 pages in 1 hour then she would read 40x pages in x hour(s).

Now, substituting '3' in place of x as in the question, we get

40x ... [ where x = 3]

:. 40(3) = 120

:. Karen would read 120 pages in 3 hours at the same speed as given in the question.