The bakers made 500 muffins. they sold 3/4 of them and 2/5 of the remainder to a charity fundraiser. how many muffins did the bakers have left? ( show steps! )

Divide 500 by 4 to find out what a quarter of 500 is.  When they sold 3/4 of the muffins, they had 1/4 left.  1/4 of 500 is 125.
Now we need to find out what 3/5 of 125 is. Divide 125 by 5, and you get 25.  so mulitply that by 3 and you get your 3/5 = 75.
So the bakers had 75 muffins left.

500 muffins*3/4=375 muffins sold
375 muffins sold*2/5=150 muffins to charity
375 muffins sold-150 muffins to charity=225 muffins remaining