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.

- Math -
**Reiny**, Saturday, November 3, 2012 at 10:50pm
correct --- x

incorrect --- 40-x

6x - 3(40-x) = 105

6x - 120 + 3x = 105

9x = 225

x = 25

25 correct , 15 wrong

- Math -
**mike**, Tuesday, March 31, 2015 at 10:03pm
5-2(12-5)=39

5-24+2=39

7=63

9

I Need to know am I right

## Answer This Question

## Related Questions

- math - a math test consist 20 multiple choice questions. 3 points are awarded ...
- Math - Need to find out how many answers I got correct out of 40 questions. I ...
- elem alg - On a certain test, the student gets 3 points for each correct answer ...
- Math - In a mathematics quiz, 20 problems are given, 5 points are given for each...
- math - A math contest consists of ten problems.Three points are given for each ...
- math help - I need help solving this math problem, please: Problem: Angela's ...
- Math - I need help solving this math problem, please: Problem: Angela's math ...
- mathematics - a math consist of 20 multiple choice questions 3 points are ...
- math - There are 80 questions on a college entrance examination. Two points are ...
- Statistics - A 50-question true-false exam is given. Each correct answer is ...

More Related Questions