There are some students in the school hall.
310 of them are boys, of whom 60% of them do not wear hats.
37 of the girls do not wear hats. What is the percentage of the students in the school hall who wear hats?
Boys |
Girls |
Total |
3x5 = 15 u |
7x5 = 35 u |
10x5 = 50 u |
No hats |
Hats |
No hats |
Hats |
|
3x3 |
2x3 |
3x5 |
4x5 |
|
9 u |
6 u |
15 u |
20 u |
50 u |
60% =
60100=
35 The number of boys is the repeated identity. Make the number of boys the same. LCM of 3 and 5 is 15.
Number of students who wear hats
= 6 u + 20 u
= 26 u
Total number of students
= 9 u + 6 u + 15 u + 20 u
= 50 u
Percentage of the students in the school hall who wear hats
=
2650 x 100%
= 52%
Answer(s): 52%