There were an equal number of girls in Class 5S and Class 5T.
23 of the students in Class 5S are girls and
17 of the students in Class 5T are boys. Given that there are a total of 20 boys in the two classes, how many students are there in Class 5T?
| Class 5S |
Class 5T |
| Girls |
Boys |
Girls |
Boys |
| 2x3 |
1x3 |
6 |
1 |
| 6 u |
3 u |
6 u |
1 u |
Fraction of girls in Class 5T
= 1 -
17=
67The number of girls in Class 5S and Class 5T is the same. Make the numerators the same.
2x33x3 of students in Class 5S =
67 of students in Class 5T
69 of students in Class 5S =
67 of students in Class 5T
Total number of boys
= 3 u + 1 u
= 4 u
4 u = 20
1 u = 20 ÷ 4 = 5
Number of students in Class 5T
= 7 u
= 7 x 5
= 35
Answer(s): 35
