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posted by Mary on Saturday, November 3, 2012 at 10:45pm.

There are 40 questions on a class test. Six points are given for each correct answer and three points are deducted for each wrong answer. Find the number of correct answers for a test score of 105.

correct --- x incorrect --- 40-x 6x - 3(40-x) = 105 6x - 120 + 3x = 105 9x = 225 x = 25 25 correct , 15 wrong

5-2(12-5)=39 5-24+2=39 7=63 9 I Need to know am I right

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