There were 272 pupils in a school. On the school anniversary,
56 of the girls and
45 of the boys came in silver jackets. The rest came in yellow jackets. The number of boys who wore yellow jackets was twice of the girls who wore yellow jackets. How many pupils were in silver jackets that day?
| Girls |
Boys |
Total |
| Silver jackets |
Yellow jackets |
Silver jackets |
Yellow jackets |
|
| 5 |
1 |
4x2 |
1x2 |
|
| |
1 |
|
2 |
|
| 5 u |
1 u |
8 u |
2 u |
16 u |
The number of boys who came in yellow jackets is repeated. Make the number of boys who came in yellow jackets the same. LCM of 1 and 2 is 2.
Total number of pupils
= 5 u + 1 u + 8 u + 2 u
= 16 u
16 u = 272
1 u = 272 ÷ 16 = 17
Number of pupils in silver jackets
= 5 u + 8 u
= 13 u
= 13 x 17
= 221
Answer(s): 221
