There were 297 pupils in a school. On the school anniversary,
23 of the girls and
34 of the boys came in blue jackets. The rest came in pink jackets. The number of boys who wore pink jackets was twice of the girls who wore pink jackets. How many pupils were in blue jackets that day?
| Girls |
Boys |
Total |
| Blue jackets |
Pink jackets |
Blue jackets |
Pink jackets |
|
| 2 |
1 |
3x2 |
1x2 |
|
| |
1 |
|
2 |
|
| 2 u |
1 u |
6 u |
2 u |
11 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 2 is 2.
Total number of pupils
= 2 u + 1 u + 6 u + 2 u
= 11 u
11 u = 297
1 u = 297 ÷ 11 = 27
Number of pupils in blue jackets
= 2 u + 6 u
= 8 u
= 8 x 27
= 216
Answer(s): 216
