How do you calculate how to make 80 on the final?

Algebra
Tutor: None Selected Time limit: 1 Day

Your final exam is worth 30 percent of your grade and it is 50 questions long. Your current grade in the class is a 66. How many questions can you miss in order to make and 80 on the final exam?

May 6th, 2015

80 - 66 = 14%

30 - 14 = 16%

(16/30) x 50 = 27

Answer is 27

May 6th, 2015

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