Of the 280 muffins that Mr. Parker baked, 40% were corn muffins. How many more corn muffins must Mr. Parker bake so that 60% of the muffin are corn muffins?
A good place to start is finding the value of 1%. If 100%=280, then 1%=2.8. 1% times 40%= 40% 2.8 times 40%= 112 1% times 60%= 60% 2.8 times 60%= 168 168-112=56
