If you are shooting a basketball and take 10 shots and make 3; what percent did you make?

If you had 10 and made 3 it’s 30%. But if you made 9 it would be 90%

So don't take my word i'm not exactly a mathematical person but i would assume a. because while selling the soap every month you increase in sells so you would by 11 percent. the you would get the factor 0.89 which if i had to guess would be the monthly profit over 11 probably wrong tho