Question
Zeph strings some green and brown beads to make a bracelet. For every 3 green beads Zeph uses, he uses 7 brown beads. He uses a total of 120 green and brown beads for the bracelet. How many more brown beads than green beads does he use?
4 m

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Zeph strings some green and brown beads to make a bracelet. For every 3 green beads Zeph uses, he uses 7 brown beads. He uses a total of 120 green and brown beads for the bracelet. How many more brown beads than green beads does he use?