There were 455 students in a school. On the school anniversary,
34 of the boys and
23 of the girls came in green shirts. The rest came in brown shirts. The number of girls who wore brown shirts was thrice of the boys who wore brown shirts. How many students were in green shirts that day?
| Boys |
Girls |
Total |
| Green shirts |
Brown shirts |
Green shirts |
Brown shirts |
|
| 3 |
1 |
2x3 |
1x3 |
|
| |
1 |
|
3 |
|
| 3 u |
1 u |
6 u |
3 u |
13 u |
The number of girls who came in brown shirts is repeated. Make the number of girls who came in brown shirts the same. LCM of 1 and 3 is 3.
Total number of students
= 3 u + 1 u + 6 u + 3 u
= 13 u
13 u = 455
1 u = 455 ÷ 13 = 35
Number of students in green shirts
= 3 u + 6 u
= 9 u
= 9 x 35
= 315
Answer(s): 315
