PSLE Students in a school are put into two groups for an excursion.
14 of the students are in Group A and the rest in Group B.
23 of the students in Group A are boys. In the school,
23 of the students are boys. What fraction of the students in Group B are girls?
Group A |
Group B |
Total |
1x3 |
3x3 |
4x3 |
|
|
3x4 |
3 u |
9 u |
12 u |
Boys |
Girls |
Boys |
Girls |
Boys |
Girls |
2 |
1 |
|
|
2x4 |
1x4 |
2 u |
1 u |
6 u |
3 u |
8 u |
4 u |
The total number of students is repeated.
Make the total number of students the same.
LCM of 4 and 3 is 12.
Number of boys in Group B
= 8 u - 2 u
= 6 u
Number of girls in Group B
= 9 u - 6 u
= 3 u
Fraction of the students in Group B that are girls
=
39=
13Answer(s):
13