There were 770 students in a school. On the school anniversary,
56 of the girls and
34 of the boys came in grey windbreakers. The rest came in silver windbreakers. The number of boys who wore silver windbreakers was four times of the girls who wore silver windbreakers. How many students were in grey windbreakers that day?
| Girls |
Boys |
Total |
| Grey windbreakers |
Silver windbreakers |
Grey windbreakers |
Silver windbreakers |
|
| 5 |
1 |
3x4 |
1x4 |
|
| |
1 |
|
4 |
|
| 5 u |
1 u |
12 u |
4 u |
22 u |
The number of boys who came in silver windbreakers is repeated. Make the number of boys who came in silver windbreakers the same. LCM of 1 and 4 is 4.
Total number of students
= 5 u + 1 u + 12 u + 4 u
= 22 u
22 u = 770
1 u = 770 ÷ 22 = 35
Number of students in grey windbreakers
= 5 u + 12 u
= 17 u
= 17 x 35
= 595
Answer(s): 595
