There were a total of 58 questions in a school English test. 6 marks were awarded for each correct answer and 4 marks were deducted for each incorrect answer or incomplete answer. Xuan could not complete all the questions in time and left the last 7 questions blank. She scored 148 marks. How many more correct answers than wrong or incomplete answers did she answer?
Correct answers
|
Marks awarded (x6) |
Wrong or incomplete answers |
Marks deducted (x4) |
Difference
|
51 |
306 |
7 |
28 |
278 |
50 |
300 |
8 |
32 |
268 |
Number of questions completed
= 58 - 7
= 51
Big difference
= 278 - 148
= 130
Small Difference
= 278 - 268
= 10
Number of wrong answers
= 130 ÷ 10
= 13
Number of wrong and incomplete answers
= 13 + 7
= 20
Number of correct answers
= 58 - 20
= 38
Number of more correct answers than wrong or incomplete answers
= 38 - 20
= 18
Answer(s): 18