There are some students in the fun fair.
710 of them are boys, of whom 70% of them do not wear hats.
13 of the girls do not wear hats. What is the percentage of the students in the fun fair who do not wear hats?
Boys |
Girls |
Total |
7x10 = 70 u |
3x10 = 30 u |
10x10 = 100 u |
No hats |
Hats |
No hats |
Hats |
|
7x7 |
3x7 |
1x10 |
2x10 |
|
49 u |
21 u |
10 u |
20 u |
100 u |
70% =
70100=
710 The number of boys is the repeated identity. Make the number of boys the same. LCM of 7 and 10 is 70.
Number of students who do not wear hats
= 49 u + 10 u
= 59 u
Total number of students
= 49 u + 21 u + 10 u + 20 u
= 100 u
Percentage of the students in the fun fair who do not wear hats
=
59100 x 100%
= 59%
Answer(s): 59%