Question
At a shop, Diana paid $30 for 6 items: 4 marbles and 2 pens. 1 marble cost $3 more than 1 pen. How much did 1 marble cost?
3 m

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At a shop, Diana paid $30 for 6 items: 4 marbles and 2 pens. 1 marble cost $3 more than 1 pen. How much did 1 marble cost?