Posted by **jonathan** on Saturday, December 15, 2007 at 9:20pm.

there are 50 question in a test. a student gains 2 marks for a correct anwser and loses 1 mark otherwise. if a student has 76 marks, how many question did he answer incorrectly?

- math -
**Jon**, Saturday, December 15, 2007 at 9:23pm
This is fairly easy just use alittle more effort and someone will check your answer.

- math -
**DrBob222**, Saturday, December 15, 2007 at 9:26pm
i = # incorrect (or otherwise) answers

c = # correct answers

========================

i + c = 50

-1 + 2c = 76

================

Solve the two equations simultaneously.

Post your work if you get stuck.

## Answer This Question

## Related Questions

- math - A test had 200 questions .Each correct answer carried 2 marks.Each wrong ...
- BSu Probability - In a multiple choice examination there are 20 question, each ...
- BSu Probability - In a multiple choice examination there are 20 question, each ...
- statistics - A student is taking a multiple choice test where each question have...
- statistics - 10. A student is taking a multiple choice test where each question ...
- Math - There are 20 question in a quiz. 5 marks will be given for a correct ...
- New holy ganges public school (Khagaria , bihar) - In a class test 5 marks are ...
- math - A test consists of 120 questions. Each correct answer, each wrong answer ...
- pro - A student has taken an exam consisting 10 multiple choice questions. Each ...
- math - In a question paper, there are 150 questions, each question carrying 2 ...

More Related Questions