PSLE The table shows the number of pupils with the following scores. A higher score means a better performance. Prizes were given to the top 7 pupils. Jack won a prize. What was the lowest he could have scored?
Score |
18 |
19 |
20 |
21 |
22 |
25 |
27 |
30 |
Pupils |
1 |
5 |
11 |
12 |
7 |
4 |
2 |
1 |
Score |
18 |
19 |
20 |
21 |
22 |
25 |
27 |
30 |
|
|
|
|
|
|
Winners |
Pupils |
1 |
5 |
11 |
12 |
7 |
4 |
2 |
1 |
If the winning score is 30, number of winners = 1
If the winning score is 27, number of winners = 1 + 2 = 3
If the winning score is 25, number of winners = 1 + 2 + 4 = 7
Since there are 7 winners, the lowest score that Jack could have scored = 25
Answer(s): 25