There are some students in the zoo.
15 of them are boys, of whom 50% of them do not wear caps.
34 of the girls do not wear caps. What is the percentage of the students in the zoo who wear caps?
Boys |
Girls |
Total |
1x2 = 2 u |
4x2 = 8 u |
5x2 = 10 u |
No caps |
Caps |
No caps |
Caps |
|
1x1 |
1x1 |
3x2 |
1x2 |
|
1 u |
1 u |
6 u |
2 u |
10 u |
50% =
50100=
12 The number of boys is the repeated identity. Make the number of boys the same. LCM of 1 and 2 is 2.
Number of students who wear caps
= 1 u + 2 u
= 3 u
Total number of students
= 1 u + 1 u + 6 u + 2 u
= 10 u
Percentage of the students in the zoo who wear caps
=
310 x 100%
= 30%
Answer(s): 30%