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Analysis Of Your Result

**What was the test ?**
Let C be the number of correct answers and W be the number of wrong answers.
Since there are 20 question in total,
**C + W = 20 .....(1)**
and the score 125 must be subtraction of marks obtained for correct answer and marks due to wrong answers.
**10C - 5W = 125 .....(2)**

Multiplying (1) by 5 and then adding it to (2),

5C + 5W + 10C - 5W = 100 + 125

15C = 225

**C = 15.**

From (1), W = 20 - C = 20 - 5 = 5.

Hence, your **15 answers** are correct while **5 answers** are wrong.

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