PSLE Pupils in a school are put into two groups for an excursion.
511 of the pupils are in Group A and the rest in Group B.
35 of the pupils in Group A are boys. In the school,
611 of the pupils are boys. What fraction of the pupils in Group B are girls?
Group A |
Group B |
Total |
5x1 |
6x1 |
11x1 |
|
|
11x1 |
5 u |
6 u |
11 u |
Boys |
Girls |
Boys |
Girls |
Boys |
Girls |
3 |
2 |
|
|
6x1 |
5x1 |
3 u |
2 u |
3 u |
3 u |
6 u |
5 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 boys in Group B
= 6 u - 3 u
= 3 u
Number of girls in Group B
= 6 u - 3 u
= 3 u
Fraction of the pupils in Group B that are girls
=
36=
12Answer(s):
12