There were a total of 88 questions in a school Science test. 5 marks were awarded for each correct answer and 1 marks were deducted for each incorrect answer or incomplete answer. Sarah could not complete all the questions in time and left the last 8 questions blank. She scored 260 marks. How many more correct answers than wrong or incomplete answers did she answer?
Correct answers
|
Marks awarded
(x5) |
Wrong or
incomplete answers |
Marks deducted
(x1) |
Difference
|
| 80 |
400 |
8 |
8 |
392 |
| 79 |
395 |
9 |
9 |
386 |
Number of questions completed
= 88 - 8
= 80
Big difference
= 392 - 260
= 132
Small Difference
= 392 - 386
= 6
Number of wrong answers
= 132 ÷ 6
= 22
Number of wrong and incomplete answers
= 22 + 8
= 30
Number of correct answers
= 88 - 30
= 58
Number of more correct answers than wrong or incomplete answers
= 58 - 30
= 28
Answer(s): 28
