Question: At the park, Naomi saw people riding 7 regular bikes and 11 children's bikes. Regular bikes have 2 wheels and kid's bikes have 4 wheels. How many wheels did Naomi see at the park?
Answer with step-by-step thinking: For the regular bikes, there are 7 x 2 = 14 wheels. For the children's bikes, there are 11 x 4 = 44 wheels. Altogether, Naomi saw 14 + 44 = 58 wheels.
So the answer is 58.

Question: There are four lamps in Valerie's room. All of them are burnt out, so she needs to buy new light bulbs. She needs 3 small light bulbs and 1 large light bulb. She has $60 to spend. If small light bulbs cost $8 and large light bulbs cost $12, how much money will Valerie have left over?
Answer with step-by-step thinking: She will spend 3 * $8 = $24 on small light bulbs. In total she will spend $24 + $12 = $36 on the 4 light bulbs. She will have $60 - $36 = $24 left over.
So the answer is 24.

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?
Answer with step-by-step thinking:
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.
So the answer is 123.