Question
Oliver has some silver and purple balls. The total mass of all his balls is 214 g. He has 5 less silver balls than purple balls. The average mass of the silver balls is 10 g. The average mass of the purple balls is 14 g. How many balls does Oliver have altogether?
3 m

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Oliver has some silver and purple balls. The total mass of all his balls is 214 g. He has 5 less silver balls than purple balls. The average mass of the silver balls is 10 g. The average mass of the purple balls is 14 g. How many balls does Oliver have altogether?