There were a total of 74 questions in a school English test. 10 marks were awarded for each correct answer and 8 marks were deducted for each incorrect answer or incomplete answer. Vanessa could not complete all the questions in time and left the last 9 questions blank. She scored 308 marks. How many less wrong or incomplete answers than correct answers did she answer?
Correct answers
|
Marks awarded (x10) |
Wrong or incomplete answers |
Marks deducted (x8) |
Difference
|
65 |
650 |
9 |
72 |
578 |
64 |
640 |
10 |
80 |
560 |
Number of questions completed
= 74 - 9
= 65
Big difference
= 578 - 308
= 270
Small Difference
= 578 - 560
= 18
Number of wrong answers
= 270 ÷ 18
= 15
Number of wrong and incomplete answers
= 15 + 9
= 24
Number of correct answers
= 74 - 24
= 50
Number of less wrong or incomplete answers than correct answers
= 50 - 24
= 26
Answer(s): 26