4 of 5 There is a bag with only milk and dark chocolates.
The probability of randomly choosing a dark chocolate is .
There are 18 dark chocolates in the bag and each is equally likely to be chosen.
Work out how many milk chocolates there must be.

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