SOLUTION: a student correctly answered 15 test questions. if his percentage grade was 83% how many questions were on the test?

Algebra ->  Percentages: Solvers, Trainers, Word Problems and pie charts -> SOLUTION: a student correctly answered 15 test questions. if his percentage grade was 83% how many questions were on the test?      Log On


   

Question 656931: a student correctly answered 15 test questions. if his percentage grade was 83% how many questions were on the test?
Answer by fcabanski(1391) About Me  (Show Source):
You can put this solution on YOUR website!
Part/whole x 100 = %.


15/x x 100 = 83 or 15/x = .83


15 = .83x


15/.83 = x = about 18