There are some students in the school hall.
15 of them are boys, of whom 80% of them do not wear caps.
14 of the girls do not wear caps. What is the percentage of the students in the school hall who wear caps?
Boys |
Girls |
Total |
1x5 = 5 u |
4x5 = 20 u |
5x5 = 25 u |
No caps |
Caps |
No caps |
Caps |
|
4x1 |
1x1 |
1x5 |
3x5 |
|
4 u |
1 u |
5 u |
15 u |
25 u |
80% =
80100=
45 The number of boys is the repeated identity. Make the number of boys the same. LCM of 1 and 5 is 5.
Number of students who wear caps
= 1 u + 15 u
= 16 u
Total number of students
= 4 u + 1 u + 5 u + 15 u
= 25 u
Percentage of the students in the school hall who wear caps
=
1625 x 100%
= 64%
Answer(s): 64%