There are some pupils in the theme park.
310 of them are girls, of whom 30% of them do not wear hats.
57 of the boys do not wear hats. What is the percentage of the pupils in the theme park who do not wear hats?
| Girls |
Boys |
Total |
3x10 =
30 u |
7x10 =
70 u |
10x10 =
100 u |
| No hats |
Hats |
No hats |
Hats |
|
| 3x3 |
7x3 |
5x10 |
2x10 |
|
| 9 u |
21 u |
50 u |
20 u |
100 u |
30% =
30100=
310 The number of girls is the repeated identity. Make the number of girls the same. LCM of 3 and 10 is 30.
Number of pupils who do not wear hats
= 9 u + 50 u
= 59 u
Total number of pupils
= 9 u + 21 u + 50 u + 20 u
= 100 u
Percentage of the pupils in the theme park who do not wear hats
=
59100 x 100%
= 59%
Answer(s): 59%
