There were 476 students in a school. On the school anniversary,
45 of the boys and
23 of the girls came in black windbreakers. The rest came in green windbreakers. The number of girls who wore green windbreakers was four times of the boys who wore green windbreakers. How many students were in black windbreakers that day?
| Boys |
Girls |
Total |
| Black windbreakers |
Green windbreakers |
Black windbreakers |
Green windbreakers |
|
| 4 |
1 |
2x4 |
1x4 |
|
| |
1 |
|
4 |
|
| 4 u |
1 u |
8 u |
4 u |
17 u |
The number of girls who came in green windbreakers is repeated. Make the number of girls who came in green windbreakers the same. LCM of 1 and 4 is 4.
Total number of students
= 4 u + 1 u + 8 u + 4 u
= 17 u
17 u = 476
1 u = 476 ÷ 17 = 28
Number of students in black windbreakers
= 4 u + 8 u
= 12 u
= 12 x 28
= 336
Answer(s): 336
