There were an equal number of boys in Class 6T and Class 6U.
23 of the pupils in Class 6T are boys and
19 of the pupils in Class 6U are girls. Given that there are a total of 20 girls in the two classes, how many pupils are there in Class 6U?
Class 6T |
Class 6U |
Boys |
Girls |
Boys |
Girls |
2x4 |
1x4 |
8 |
1 |
8 u |
4 u |
8 u |
1 u |
Fraction of boys in Class 6U
= 1 -
19=
89The number of boys in Class 6T and Class 6U is the same. Make the numerators the same.
2x43x4 of pupils in Class 6T =
89 of pupils in Class 6U
812 of pupils in Class 6T =
89 of pupils in Class 6U
Total number of girls
= 4 u + 1 u
= 5 u
5 u = 20
1 u = 20 ÷ 5 = 4
Number of pupils in Class 6U
= 9 u
= 9 x 4
= 36
Answer(s): 36