There are 3 types of muffins at a stall. 5/12 of them are blueberry muffins. 4/7 of the remainder are chocolate chip muffins and the rest are cheese muffins. If there are 152 more blueberry than cheese muffins, how many chocolate chip muffins are there?

Answer: C. 304 chocolate chip muffins

Remainder = 7/12 of the total.
Chocolate chip = 4/7 * 7/12 = 4/12. Cheese = 3/7 * 7/12 = 3/12.
Difference between blueberry (5/12) and cheese (3/12) is 2/12 = 152.
If 2/12 is 152, then 1/12 is 76.
Chocolate chip (4/12) = 4 * 76 = 304

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