There were a total of 64 questions in a school Maths test. 7 marks were awarded for each correct answer and 5 marks were deducted for each incorrect answer or incomplete answer. Kimberly could not complete all the questions in time and left the last 5 questions blank. She scored 148 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 (x5) |
Difference
|
59 |
413 |
5 |
25 |
388 |
58 |
406 |
6 |
30 |
376 |
Number of questions completed
= 64 - 5
= 59
Big difference
= 388 - 148
= 240
Small Difference
= 388 - 376
= 12
Number of wrong answers
= 240 ÷ 12
= 20
Number of wrong and incomplete answers
= 20 + 5
= 25
Number of correct answers
= 64 - 25
= 39
Number of less wrong or incomplete answers than correct answers
= 39 - 25
= 14
Answer(s): 14