- 07/02/2019 at 12:46 pm #1288896EduGorillaKeymasterSelect Question Language :
At a T-shirt auction, 42 Reds United T-shirts were sold and 30 Blues T-shirts were sold. No one bought more than one T-shirt of the same type and everyone bought at least one. If 60 people participated in the auction, how many bought both T-shirts?
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