PSLE The table shows the number of students with the following scores. A higher score means a better performance. Prizes were given to the top 13 students. Billy won a prize. What was the lowest he could have scored?
Score |
15 |
16 |
17 |
18 |
20 |
23 |
24 |
25 |
Students |
3 |
7 |
13 |
14 |
9 |
6 |
4 |
3 |
Score |
15 |
16 |
17 |
18 |
20 |
23 |
24 |
25 |
|
|
|
|
|
|
Winners |
Students |
3 |
7 |
13 |
14 |
9 |
6 |
4 |
3 |
If the winning score is 25, number of winners = 3
If the winning score is 24, number of winners = 3 + 4 = 7
If the winning score is 23, number of winners = 3 + 4 + 6 = 13
Since there are 13 winners, the lowest score that Billy could have scored = 23
Answer(s): 23