There were 448 students in a school. On the school anniversary,
45 of the girls and
23 of the boys came in white jackets. The rest came in pink jackets. The number of boys who wore pink jackets was thrice of the girls who wore pink jackets. How many students were in white jackets that day?
| Girls |
Boys |
Total |
| White jackets |
Pink jackets |
White jackets |
Pink jackets |
|
| 4 |
1 |
2x3 |
1x3 |
|
| |
1 |
|
3 |
|
| 4 u |
1 u |
6 u |
3 u |
14 u |
The number of boys who came in pink jackets is repeated. Make the number of boys who came in pink jackets the same. LCM of 1 and 3 is 3.
Total number of students
= 4 u + 1 u + 6 u + 3 u
= 14 u
14 u = 448
1 u = 448 ÷ 14 = 32
Number of students in white jackets
= 4 u + 6 u
= 10 u
= 10 x 32
= 320
Answer(s): 320
