Question
Cole has some black and gold beads. The total mass of all his beads is 231 g. He has 6 less black beads than gold beads. The average mass of the black beads is 4 g. The average mass of the gold beads is 11 g. How many beads does Cole have altogether?
3 m

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Cole has some black and gold beads. The total mass of all his beads is 231 g. He has 6 less black beads than gold beads. The average mass of the black beads is 4 g. The average mass of the gold beads is 11 g. How many beads does Cole have altogether?