During one test, 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 : 4 : 2. If Wendy was awarded 252 points, how many questions are there in all?
|
Correct |
Wrong |
Missed |
Number |
7 u |
4 u |
2 u |
Value |
6 |
- 3 |
- 1 |
Total value |
42 u |
12 u |
2 u |
Total score that Wendy was awarded
= 42 u - 12 u - 2 u
= 28 u
28 u = 252
1 u = 252 ÷ 28 = 9
Total number of questions
= 7 u + 4 u + 2 u
= 13 u
= 13 x 7
= 91
Answer(s): 91