There were 247 students in a school. On the school anniversary,
45 of the boys and
34 of the girls came in yellow caps. The rest came in purple caps. The number of girls who wore purple caps was twice of the boys who wore purple caps. How many students were in yellow caps that day?
Boys |
Girls |
Total |
Yellow caps |
Purple caps |
Yellow caps |
Purple caps |
|
4 |
1 |
3x2 |
1x2 |
|
|
1 |
|
2 |
|
4 u |
1 u |
6 u |
2 u |
13 u |
The number of girls who came in purple caps is repeated. Make the number of girls who came in purple caps the same. LCM of 1 and 2 is 2.
Total number of students
= 4 u + 1 u + 6 u + 2 u
= 13 u
13 u = 247
1 u = 247 ÷ 13 = 19
Number of students in yellow caps
= 4 u + 6 u
= 10 u
= 10 x 19
= 190
Answer(s): 190