A prescription is written for ibuprofen 10% cream. How much ibuprofen is needed to trade name 20 gm of the cream?

A prescription is written for ibuprofen 10% cream. How much ibuprofen is needed to make 20 gm of the cream?
Answers:
2 grams
10% of 20 grams = 2 grams of ibuprofen
Do you not understand what 10% means?

No, I'm not giving this one to you.
I'm going to cart a guess and say 2g? 10% of 20 is 2.

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