There were 440 pupils in a school. On the school anniversary,
23 of the boys and
34 of the girls came in pink blazers. The rest came in silver blazers. The number of girls who wore silver blazers was twice of the boys who wore silver blazers. How many pupils were in pink blazers that day?
| Boys |
Girls |
Total |
| Pink blazers |
Silver blazers |
Pink blazers |
Silver blazers |
|
| 2 |
1 |
3x2 |
1x2 |
|
| |
1 |
|
2 |
|
| 2 u |
1 u |
6 u |
2 u |
11 u |
The number of girls who came in silver blazers is repeated. Make the number of girls who came in silver blazers the same. LCM of 1 and 2 is 2.
Total number of pupils
= 2 u + 1 u + 6 u + 2 u
= 11 u
11 u = 440
1 u = 440 ÷ 11 = 40
Number of pupils in pink blazers
= 2 u + 6 u
= 8 u
= 8 x 40
= 320
Answer(s): 320
