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.
710 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 boys?
Group A |
Group B |
Total |
5x2 |
6x2 |
11x2 |
|
|
2x11 |
10 u |
12 u |
22 u |
Boys |
Girls |
Boys |
Girls |
Boys |
Girls |
7 |
3 |
|
|
1x11 |
1x11 |
7 u |
3 u |
4 u |
8 u |
11 u |
11 u |
The total number of students is repeated.
Make the total number of students the same.
LCM of 11 and 2 is 22.
Number of boys in Group B
= 11 u - 7 u
= 4 u
Fraction of the students in Group B that are boys
=
412=
13Answer(s):
13