Consider the question. To get the printer to work, Jerry needs to add a black-and-white cartridge and three color cartridges. If each color cartridge costs $32 and each black-and-white cartridge costs $27, how much does he pay total?
 If the answer is '123'; explain the reasoning:
First find the total cost of the color cartridges: $32 / cartridge * 3 cartridges = $96. Then add the cost of the black - and - white cartridge to find the total cost: $96 + $27 = $123.