PSLE Students in a school are put into two groups for an excursion.
25 of the students are in Group A and the rest in Group B.
34 of the students in Group A are boys. In the school,
12 of the students are boys. What fraction of the students in Group B are girls?
Group A |
Group B |
Total |
2x2 |
3x2 |
5x2 |
|
|
2x5 |
4 u |
6 u |
10 u |
Boys |
Girls |
Boys |
Girls |
Boys |
Girls |
3 |
1 |
|
|
1x5 |
1x5 |
3 u |
1 u |
2 u |
4 u |
5 u |
5 u |
The total number of students is repeated.
Make the total number of students the same.
LCM of 5 and 2 is 10.
Number of boys in Group B
= 5 u - 3 u
= 2 u
Number of girls in Group B
= 6 u - 2 u
= 4 u
Fraction of the students in Group B that are girls
=
46=
23Answer(s):
23