There were 396 students in a school. On the school anniversary,
23 of the boys and
34 of the girls came in pink vests. The rest came in red vests. The number of girls who wore red vests was twice of the boys who wore red vests. How many students were in pink vests that day?
| Boys |
Girls |
Total |
| Pink vests |
Red vests |
Pink vests |
Red vests |
|
| 2 |
1 |
3x2 |
1x2 |
|
| |
1 |
|
2 |
|
| 2 u |
1 u |
6 u |
2 u |
11 u |
The number of girls who came in red vests is repeated. Make the number of girls who came in red vests the same. LCM of 1 and 2 is 2.
Total number of students
= 2 u + 1 u + 6 u + 2 u
= 11 u
11 u = 396
1 u = 396 ÷ 11 = 36
Number of students in pink vests
= 2 u + 6 u
= 8 u
= 8 x 36
= 288
Answer(s): 288
