AMC8 2001 Problem 13

Of the 36 students in Richelle’s class, 12 prefer chocolate pie, 8 prefer apple, and 6 prefer blueberry. Half of the remaining students prefer cherry pie and half prefer lemon. For Richelle’s pie graph showing this data, how many degrees should she use for

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Answer Choices
A. 10
B. 20
C. 30
D. 50
E. 72