Question
Japheth has some purple and yellow beads. The total mass of all his beads is 201 g. He has 9 less purple beads than yellow beads. The average mass of the purple beads is 3 g. The average mass of the yellow beads is 9 g. How many beads does Japheth have altogether?
3 m

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Japheth has some purple and yellow beads. The total mass of all his beads is 201 g. He has 9 less purple beads than yellow beads. The average mass of the purple beads is 3 g. The average mass of the yellow beads is 9 g. How many beads does Japheth have altogether?