Compounding and Advanced IV Calculations, Module 04

I need to do 3 assignment this is the first one.
1. A prescriber writes a prescription for the following compound:

Hydroquinone powder 2%
Urea 5%
Salicylic acid 10%
Fluocinonide 0.05% cream, QS
Dispense: 300 grams
Calculate the number of grams of each of the 4 ingredients in the compound. Show your calculations for each ingredient.
The other 2 assignment are in the Doc I am summiting.