Question
Luke bought the same number of staplers and markers. The total cost of 4 staplers and 1 marker was $12. The total cost of 1 stapler and 4 markers was $18. He spent a total of $30. How many staplers did Luke buy?
4 m

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Luke bought the same number of staplers and markers. The total cost of 4 staplers and 1 marker was $12. The total cost of 1 stapler and 4 markers was $18. He spent a total of $30. How many staplers did Luke buy?