# SOLUTION: Denise did 7/8 of the problems on the quiz correctly and 5 incorrectly. She did all the problems. How many problems were there? I get 7/8 is 87.5%, but I can't figure up how t

Algebra ->  Algebra  -> Percentages: Solvers, Trainers, Word Problems and pie charts -> SOLUTION: Denise did 7/8 of the problems on the quiz correctly and 5 incorrectly. She did all the problems. How many problems were there? I get 7/8 is 87.5%, but I can't figure up how t      Log On

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 Algebra: Percentage and Pie Charts Solvers Lessons Answers archive Quiz In Depth

 Question 17087: Denise did 7/8 of the problems on the quiz correctly and 5 incorrectly. She did all the problems. How many problems were there? I get 7/8 is 87.5%, but I can't figure up how to set up the problem.Answer by Earlsdon(6287)   (Show Source): You can put this solution on YOUR website!You can let x = the number of problems on the quiz. Denise did (7/8) of x correctly and 5 of the problems incorrectly, so altogether she did (7/8)x + 5 problems. You can set up an equation as follows: Simplify and solve for x. Subtract (7/8)x from both sides. Multiply both sides by 8. There were 40 problems on the quiz.