PSLE Students in a school are put into two groups for an excursion.
211 of the students are in Group A and the rest in Group B.
34 of the students in Group A are girls. In the school,
12 of the students are girls. What fraction of the students in Group B are boys?
Group A |
Group B |
Total |
2x2 |
9x2 |
11x2 |
|
|
2x11 |
4 u |
18 u |
22 u |
Girls |
Boys |
Girls |
Boys |
Girls |
Boys |
3 |
1 |
|
|
1x11 |
1x11 |
3 u |
1 u |
8 u |
10 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 girls in Group B
= 11 u - 3 u
= 8 u
Number of boys in Group B
= 18 u - 8 u
= 10 u
Fraction of the students in Group B that are boys
=
1018=
59Answer(s):
59