PSLE Students in a school are put into two groups for an excursion.
511 of the students are in Group A and the rest in Group B.
15 of the students in Group A are girls. In the school,
411 of the students are girls. What fraction of the students in Group B are girls?
Group A |
Group B |
Total |
5x1 |
6x1 |
11x1 |
|
|
11x1 |
5 u |
6 u |
11 u |
Girls |
Boys |
Girls |
Boys |
Girls |
Boys |
1 |
4 |
|
|
4x1 |
7x1 |
1 u |
4 u |
3 u |
3 u |
4 u |
7 u |
The total number of students is repeated.
Make the total number of students the same.
LCM of 11 and 11 is 11.
Number of girls in Group B
= 4 u - 1 u
= 3 u
Fraction of the students in Group B that are girls
=
36=
12Answer(s):
12