There were a total of 94 questions in a school Science test. 9 marks were awarded for each correct answer and 7 marks were deducted for each incorrect answer or incomplete answer. Olivia could not complete all the questions in time and left the last 6 questions blank. She scored 558 marks. How many more correct answers than wrong or incomplete answers did she answer?
Correct answers
|
Marks awarded
(x9) |
Wrong or
incomplete answers |
Marks deducted
(x7) |
Difference
|
| 88 |
792 |
6 |
42 |
750 |
| 87 |
783 |
7 |
49 |
734 |
Number of questions completed
= 94 - 6
= 88
Big difference
= 750 - 558
= 192
Small Difference
= 750 - 734
= 16
Number of wrong answers
= 192 ÷ 16
= 12
Number of wrong and incomplete answers
= 12 + 6
= 18
Number of correct answers
= 94 - 18
= 76
Number of more correct answers than wrong or incomplete answers
= 76 - 18
= 58
Answer(s): 58
