Question
Liam has some white and pink balls. The total mass of all his balls is 186 g. He has 4 more pink balls than white balls. The average mass of the white balls is 3 g. The average mass of the pink balls is 6 g. How many balls does Liam have altogether?
3 m

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Liam has some white and pink balls. The total mass of all his balls is 186 g. He has 4 more pink balls than white balls. The average mass of the white balls is 3 g. The average mass of the pink balls is 6 g. How many balls does Liam have altogether?