SOLUTION: In a test all questions were of equal value. If you answered 9 of the first 10 questions correctly, but only 3 10 of the remaining questions correctly, you would have scored 50%

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: In a test all questions were of equal value. If you answered 9 of the first 10 questions correctly, but only 3 10 of the remaining questions correctly, you would have scored 50%      Log On


   

Question 976429: In a test all questions were of equal value. If you answered 9 of the first 10 questions
correctly, but only 3
10 of the remaining questions correctly, you would have scored
50% for the whole test. The number of questions in the test was
(A) 60 (B) 40 (C) 20 (D) 50 (E) 30
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


There were 10 questions in the first part of the test and questions in the second part of the test, so the total number of questions was . The person taking the test scored 9 points on the first part and points on the second part which is half of the total questions, so:



Solve for and then calculate .

John

My calculator said it, I believe it, that settles it