There were 130 students in a school. On the school anniversary,
23 of the boys and
45 of the girls came in white shirts. The rest came in silver shirts. The number of girls who wore silver shirts was twice of the boys who wore silver shirts. How many students were in white shirts that day?
| Boys |
Girls |
Total |
| White shirts |
Silver shirts |
White shirts |
Silver shirts |
|
| 2 |
1 |
4x2 |
1x2 |
|
| |
1 |
|
2 |
|
| 2 u |
1 u |
8 u |
2 u |
13 u |
The number of girls who came in silver shirts is repeated. Make the number of girls who came in silver shirts the same. LCM of 1 and 2 is 2.
Total number of students
= 2 u + 1 u + 8 u + 2 u
= 13 u
13 u = 130
1 u = 130 ÷ 13 = 10
Number of students in white shirts
= 2 u + 8 u
= 10 u
= 10 x 10
= 100
Answer(s): 100
