40=20% of what?

40/.2   400/2   200

You took 40 cookies from the jar. You took 20% of the whole cookie jar.

How many cookies were in the cookie jar before you stole some.

8.5% of 500 = what?

0.085 X 500= 42.5

You have 500$ in your piggy bank. You are donating 8.5% to charity. How much are you donating?

18=?% of 150

18/150= 12%

You have 18 ice lollies in a bag in the freezer. There are 150 ice lollies in the freezer including the ones in the bag. The bag of ice lollies is what percent of the total amount of ice lollies in the freezer?