Question
Elijah has some black and pink beads. The total mass of all his beads is 218 g. He has 2 less black beads than pink beads. The average mass of the black beads is 5 g. The average mass of the pink beads is 7 g. How many beads does Elijah have altogether?
3 m

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Elijah has some black and pink beads. The total mass of all his beads is 218 g. He has 2 less black beads than pink beads. The average mass of the black beads is 5 g. The average mass of the pink beads is 7 g. How many beads does Elijah have altogether?