There are some students in the zoo.
310 of them are boys, of whom 40% of them do not wear hats.
67 of the girls do not wear hats. What is the percentage of the students in the zoo who do not wear hats?
Boys |
Girls |
Total |
3x5 = 15 u |
7x5 = 35 u |
10x5 = 50 u |
No hats |
Hats |
No hats |
Hats |
|
2x3 |
3x3 |
6x5 |
1x5 |
|
6 u |
9 u |
30 u |
5 u |
50 u |
40% =
40100=
25 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 do not wear hats
= 6 u + 30 u
= 36 u
Total number of students
= 6 u + 9 u + 30 u + 5 u
= 50 u
Percentage of the students in the zoo who do not wear hats
=
3650 x 100%
= 72%
Answer(s): 72%