SOLUTION: Each student is given 20 problems. Five points are awarded for each correct answer, and two points are deducted for each incorrect answer. Ellen's score was 72. How many correct an

Algebra ->  -> SOLUTION: Each student is given 20 problems. Five points are awarded for each correct answer, and two points are deducted for each incorrect answer. Ellen's score was 72. How many correct an      Log On

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 Question 95563: Each student is given 20 problems. Five points are awarded for each correct answer, and two points are deducted for each incorrect answer. Ellen's score was 72. How many correct answers did she have? Is this the correct way: 20(5x-2y)=72Answer by checkley71(8403)   (Show Source): You can put this solution on YOUR website!NO! 5X-2(20-X)=72 5X-40+2X=72 7X=72+40 7X=112 X=112/7 X=16 CORRECT ANSWERS. 20-16=4 INCORRECT ANSWERS. PROOF 16*5-4*2=72 80-8=72 72=72.