There were 495 pupils in a school. On the school anniversary,
56 of the girls and
23 of the boys came in pink windbreakers. The rest came in white windbreakers. The number of boys who wore white windbreakers was thrice of the girls who wore white windbreakers. How many pupils were in pink windbreakers that day?
| Girls |
Boys |
Total |
| Pink windbreakers |
White windbreakers |
Pink windbreakers |
White windbreakers |
|
| 5 |
1 |
2x3 |
1x3 |
|
| |
1 |
|
3 |
|
| 5 u |
1 u |
6 u |
3 u |
15 u |
The number of boys who came in white windbreakers is repeated. Make the number of boys who came in white windbreakers the same. LCM of 1 and 3 is 3.
Total number of pupils
= 5 u + 1 u + 6 u + 3 u
= 15 u
15 u = 495
1 u = 495 ÷ 15 = 33
Number of pupils in pink windbreakers
= 5 u + 6 u
= 11 u
= 11 x 33
= 363
Answer(s): 363
