Algebra

A test has 15 questions worth 100 points in total. The test consists of multiple choice questions, which are 4 points each, and open-response questions, which are worth 12 points each. How many multiple choice questions are on the test?

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  1. Let X= multichoiceques,and Y=openQUES,(simulta,eqn) 4X+12Y=100,X+Y=15,then get your ans

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  2. If there are x multiple-choice questions, then there are 15-x open ones.

    4x + 12(15-x) = 100

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