Question
Elijah has some yellow and black beads. The total mass of all his beads is 247 g. He has 10 more black beads than yellow beads. The average mass of the yellow beads is 5 g. The average mass of the black beads is 6 g. How many beads does Elijah have altogether?
3 m

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Elijah has some yellow and black beads. The total mass of all his beads is 247 g. He has 10 more black beads than yellow beads. The average mass of the yellow beads is 5 g. The average mass of the black beads is 6 g. How many beads does Elijah have altogether?