PSLE Students in a school are put into two groups for an excursion.
310 of the students are in Group A and the rest in Group B.
56 of the students in Group A are boys. In the school,
34 of the students are boys. What fraction of the students in Group B are boys?
Group A |
Group B |
Total |
3x2 |
7x2 |
10x2 |
|
|
4x5 |
6 u |
14 u |
20 u |
Boys |
Girls |
Boys |
Girls |
Boys |
Girls |
5 |
1 |
|
|
3x5 |
1x5 |
5 u |
1 u |
10 u |
4 u |
15 u |
5 u |
The total number of students is repeated.
Make the total number of students the same.
LCM of 10 and 4 is 20.
Number of boys in Group B
= 15 u - 5 u
= 10 u
Fraction of the students in Group B that are boys
=
1014=
57Answer(s):
57