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?

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Answer 1 · 2018-05-10T09:00:21

120 pages

#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.