The answer is p = 15 x 12.50. This is the first step because you need to figure out how much money he made at work in order to find how much money he earned in commission. The next step would be to take the answer to 15 x 12.50, which would be 187.5, and subtract it from 263.85. The answer to 263.85 - 187.5 is the amount of money he made from commission.
