There were a total of 70 questions in a school English test. 7 marks were awarded for each correct answer and 3 marks were deducted for each incorrect answer or incomplete answer. Cathy could not complete all the questions in time and left the last 8 questions blank. She scored 260 marks. How many less wrong or incomplete answers than correct answers did she answer?
Correct answers
|
Marks awarded (x7) |
Wrong or incomplete answers |
Marks deducted (x3) |
Difference
|
62 |
434 |
8 |
24 |
410 |
61 |
427 |
9 |
27 |
400 |
Number of questions completed
= 70 - 8
= 62
Big difference
= 410 - 260
= 150
Small Difference
= 410 - 400
= 10
Number of wrong answers
= 150 ÷ 10
= 15
Number of wrong and incomplete answers
= 15 + 8
= 23
Number of correct answers
= 70 - 23
= 47
Number of less wrong or incomplete answers than correct answers
= 47 - 23
= 24
Answer(s): 24