Carlton wears an assortment of sweater vests and button-up shirts. He has twice as many sweater vests as button-up shirts and considers each unique combination of vest and shirt to be an outfit. He owns three button-up shirts. How many outfits does Carlton have?
Let’s work this out in a step by step way to be sure we have the right answer.
18
Carlton has 2 * 3 = 6 sweater vests.

He can wear each sweater vest with different 3 button - up shirts, so Carlton has 3 * 6 = 18 outfits.

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Final answer: 18