Jane and Jill both love to collect books. Jane has twice as many books as Jill. Together, they have a total of 216 books in their collection. How many books does Jane have?
Jane has 2 times as many books as Jill, so there are 3 parts. Two parts Jane and one part Jill. So, divide 216 by 3 and it's 72, which equals one part. Jane has two parts, so 72 x 2. Jane has 144 books.
