Question

Mrs. Gordon had $40 to spend on cookies and pies. She bought 4 cookies, each of which cost $3. She spent twice as much on pies as she spent on cookies. Mrs. Gordon bought 3 pies that each cost the same amount. How much did each pie cost? $ How much money did Mrs. Gordon have left after buying the cookies and pies? $

Answer 1

First, multiply $3 by 4 to get $12 spent on cookies.  Then, you multiply $12 by 2 to know that the pies cost $24.  You then divide the $24 by 3 to get $6 per pie.  Meaning, each pie had cost $6.  You add the $12 and $24 together to get $36.  Finally, you subtract $36 from $40 to know that she only has $4 left.