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Question

Louis and Mary went shopping and spent the same amount of money. Mary bought 4 equally priced notebooks and a pen that cost $3. She also bought a paperback that cost as much as 3 of the notebooks. Louis bought one of the same notebooks as Mary and spent another $21 on shoes. How much money did each person spend?

Answer 1

4n+3+3n= n+21

6n=18

n=3

3+21=24

each spent $24