PSLE Students in a school are put into two groups for an excursion.
29 of the students are in Group A and the rest in Group B.
14 of the students in Group A are girls. In the school,
16 of the students are girls. What fraction of the students in Group B are girls?
Group A |
Group B |
Total |
2x2 |
7x2 |
9x2 |
|
|
6x3 |
4 u |
14 u |
18 u |
Girls |
Boys |
Girls |
Boys |
Girls |
Boys |
1 |
3 |
|
|
1x3 |
5x3 |
1 u |
3 u |
2 u |
12 u |
3 u |
15 u |
The total number of students is repeated.
Make the total number of students the same.
LCM of 9 and 6 is 18.
Number of girls in Group B
= 3 u - 1 u
= 2 u
Fraction of the students in Group B that are girls
=
214=
17Answer(s):
17