There were a total of 98 questions in a school Maths test. 10 marks were awarded for each correct answer and 8 marks were deducted for each incorrect answer or incomplete answer. Yen could not complete all the questions in time and left the last 9 questions blank. She scored 476 marks. How many more correct answers than wrong or incomplete answers did she answer?
Correct answers
|
Marks awarded (x10) |
Wrong or incomplete answers |
Marks deducted (x8) |
Difference
|
89 |
890 |
9 |
72 |
818 |
88 |
880 |
10 |
80 |
800 |
Number of questions completed
= 98 - 9
= 89
Big difference
= 818 - 476
= 342
Small Difference
= 818 - 800
= 18
Number of wrong answers
= 342 ÷ 18
= 19
Number of wrong and incomplete answers
= 19 + 9
= 28
Number of correct answers
= 98 - 28
= 70
Number of more correct answers than wrong or incomplete answers
= 70 - 28
= 42
Answer(s): 42