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?
Let's be accurate as possible. Think before you answer.
24
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.

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So, the final answer is 24