Chemistry Question....please help?

[notachemist]

Calculate the mass percent, % (m/m), for the solute in each of the following solutions

A) 75g of NaOH in 325 g of NaOH solution
B) 2.0g of KOH in 20.0g of H2O

 

[That guy]

for mass percentage, it is the mass of the solute/ mass of the solvent *100.