There were a total of 52 questions in a school Maths test. 6 marks were awarded for each correct answer and 4 marks were deducted for each incorrect answer or incomplete answer. Lucy could not complete all the questions in time and left the last 7 questions blank. She scored 112 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 (x4) |
Difference
|
45 |
270 |
7 |
28 |
242 |
44 |
264 |
8 |
32 |
232 |
Number of questions completed
= 52 - 7
= 45
Big difference
= 242 - 112
= 130
Small Difference
= 242 - 232
= 10
Number of wrong answers
= 130 ÷ 10
= 13
Number of wrong and incomplete answers
= 13 + 7
= 20
Number of correct answers
= 52 - 20
= 32
Number of less wrong or incomplete answers than correct answers
= 32 - 20
= 12
Answer(s): 12