During one test, points were awarded for questions answered as shown.
|
Points per question |
Correct |
7 |
Wrong |
- 3 |
Missed |
- 1 |
The ratio of the questions correctly to questions answered wrongly to questions that were missed out was 9 : 4 : 1. If Ivory was awarded 350 points, how many questions are there in all?
|
Correct |
Wrong |
Missed |
Number |
9 u |
4 u |
1 u |
Value |
7 |
- 3 |
- 1 |
Total value |
63 u |
12 u |
1 u |
Total score that Ivory was awarded
= 63 u - 12 u - 1 u
= 50 u
50 u = 350
1 u = 350 ÷ 50 = 7
Total number of questions
= 9 u + 4 u + 1 u
= 14 u
= 14 x 9
= 126
Answer(s): 126