There were 280 students in a school. On the school anniversary,
56 of the boys and
34 of the girls came in silver windbreakers. The rest came in brown windbreakers. The number of girls who wore brown windbreakers was twice of the boys who wore brown windbreakers. How many students were in silver windbreakers that day?
| Boys |
Girls |
Total |
| Silver windbreakers |
Brown windbreakers |
Silver windbreakers |
Brown windbreakers |
|
| 5 |
1 |
3x2 |
1x2 |
|
| |
1 |
|
2 |
|
| 5 u |
1 u |
6 u |
2 u |
14 u |
The number of girls who came in brown windbreakers is repeated. Make the number of girls who came in brown windbreakers the same. LCM of 1 and 2 is 2.
Total number of students
= 5 u + 1 u + 6 u + 2 u
= 14 u
14 u = 280
1 u = 280 ÷ 14 = 20
Number of students in silver windbreakers
= 5 u + 6 u
= 11 u
= 11 x 20
= 220
Answer(s): 220
