Question
The total mass of 8 cupcakes and 2 muffins is 390 g. Each cupcake has a mass thrice as much as a muffin. Find the mass of a muffin.
4 m

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The total mass of 8 cupcakes and 2 muffins is 390 g. Each cupcake has a mass thrice as much as a muffin. Find the mass of a muffin.