There were a total of 56 questions in a school Science test. 6 marks were awarded for each correct answer and 2 marks were deducted for each incorrect answer or incomplete answer. Julie could not complete all the questions in time and left the last 7 questions blank. She scored 144 marks. How many less wrong or incomplete answers than correct answers did she answer?
Correct answers
|
Marks awarded
(x6) |
Wrong or
incomplete answers |
Marks deducted
(x2) |
Difference
|
| 49 |
294 |
7 |
14 |
280 |
| 48 |
288 |
8 |
16 |
272 |
Number of questions completed
= 56 - 7
= 49
Big difference
= 280 - 144
= 136
Small Difference
= 280 - 272
= 8
Number of wrong answers
= 136 ÷ 8
= 17
Number of wrong and incomplete answers
= 17 + 7
= 24
Number of correct answers
= 56 - 24
= 32
Number of less wrong or incomplete answers than correct answers
= 32 - 24
= 8
Answer(s): 8
