a baker baked some muffins and brownies for sale.45% of the pastries were muffins.After selling a equal amount of muffins and brownies, 40% of the pastries were left.He had 30 more brownies than muffins.How much muffins did he sell?

Respuesta :

He sold 15 muffins. There were 135 muffins and 165 brownies in the start.