There were a total of 70 questions in a school English test. 8 marks were awarded for each correct answer and 5 marks were deducted for each incorrect answer or incomplete answer. Joelle could not complete all the questions in time and left the last 4 questions blank. She scored 235 marks. How many more correct answers than wrong or incomplete answers did she answer?
Correct answers
|
Marks awarded (x8) |
Wrong or incomplete answers |
Marks deducted (x5) |
Difference
|
66 |
528 |
4 |
20 |
508 |
65 |
520 |
5 |
25 |
495 |
Number of questions completed
= 70 - 4
= 66
Big difference
= 508 - 235
= 273
Small Difference
= 508 - 495
= 13
Number of wrong answers
= 273 ÷ 13
= 21
Number of wrong and incomplete answers
= 21 + 4
= 25
Number of correct answers
= 70 - 25
= 45
Number of more correct answers than wrong or incomplete answers
= 45 - 25
= 20
Answer(s): 20