There were a total of 64 questions in a school Science test. 6 marks were awarded for each correct answer and 3 marks were deducted for each incorrect answer or incomplete answer. Jade could not complete all the questions in time and left the last 9 questions blank. She scored 105 marks. How many more correct answers than wrong or incomplete answers did she answer?
Correct answers
|
Marks awarded (x6) |
Wrong or incomplete answers |
Marks deducted (x3) |
Difference
|
55 |
330 |
9 |
27 |
303 |
54 |
324 |
10 |
30 |
294 |
Number of questions completed
= 64 - 9
= 55
Big difference
= 303 - 105
= 198
Small Difference
= 303 - 294
= 9
Number of wrong answers
= 198 ÷ 9
= 22
Number of wrong and incomplete answers
= 22 + 9
= 31
Number of correct answers
= 64 - 31
= 33
Number of more correct answers than wrong or incomplete answers
= 33 - 31
= 2
Answer(s): 2