Question: Mike changes tires on different vehicles. He changes all the tires on 12 motorcycles and all the tires on 10 cars. How many tires did he change? Think carefully first, then make a decision:
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He changed 12 * 2 = 24 motorcycle tires. He changed 10 * 4 = 40 car tires. So he changed 24 + 40 = 64 total tires. So the answer is 64.
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