During one exam, points were awarded for questions answered as shown.
|
Points per question |
Correct |
6 |
Wrong |
- 3 |
Missed |
- 1 |
The ratio of the questions correctly to questions answered wrongly to questions that were missed out was 7 : 3 : 2. If Eva was awarded 248 points, how many questions are there in all?
|
Correct |
Wrong |
Missed |
Number |
7 u |
3 u |
2 u |
Value |
6 |
- 3 |
- 1 |
Total value |
42 u |
9 u |
2 u |
Total score that Eva was awarded
= 42 u - 9 u - 2 u
= 31 u
31 u = 248
1 u = 248 ÷ 31 = 8
Total number of questions
= 7 u + 3 u + 2 u
= 12 u
= 12 x 7
= 84
Answer(s): 84