There are some students in the stadium.
15 of them are boys, of whom 40% of them do not wear hats.
14 of the girls do not wear hats. What is the percentage of the students in the stadium who wear hats?
Boys |
Girls |
Total |
1x5 = 5 u |
4x5 = 20 u |
5x5 = 25 u |
No hats |
Hats |
No hats |
Hats |
|
2x1 |
3x1 |
1x5 |
3x5 |
|
2 u |
3 u |
5 u |
15 u |
25 u |
40% =
40100=
25 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 hats
= 3 u + 15 u
= 18 u
Total number of students
= 2 u + 3 u + 5 u + 15 u
= 25 u
Percentage of the students in the stadium who wear hats
=
1825 x 100%
= 72%
Answer(s): 72%