Question
At a shop, Alice paid $20 for 6 items: 2 folders and 4 pens. The total cost of 2 folders is $4 more than the total cost of 4 pens. How much did 1 folder cost?
4 m

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At a shop, Alice paid $20 for 6 items: 2 folders and 4 pens. The total cost of 2 folders is $4 more than the total cost of 4 pens. How much did 1 folder cost?