There were 630 students in a school. On the school anniversary,
23 of the girls and
45 of the boys came in silver caps. The rest came in pink caps. The number of boys who wore pink caps was thrice of the girls who wore pink caps. How many students were in silver caps that day?
Girls |
Boys |
Total |
Silver caps |
Pink caps |
Silver caps |
Pink caps |
|
2 |
1 |
4x3 |
1x3 |
|
|
1 |
|
3 |
|
2 u |
1 u |
12 u |
3 u |
18 u |
The number of boys who came in pink caps is repeated. Make the number of boys who came in pink caps the same. LCM of 1 and 3 is 3.
Total number of students
= 2 u + 1 u + 12 u + 3 u
= 18 u
18 u = 630
1 u = 630 ÷ 18 = 35
Number of students in silver caps
= 2 u + 12 u
= 14 u
= 14 x 35
= 490
Answer(s): 490