There are some students in the theme park.
710 of them are girls, of whom 70% of them do not wear scarves.
23 of the boys do not wear scarves. What is the percentage of the students in the theme park who do not wear scarves?
Girls |
Boys |
Total |
7x10 = 70 u |
3x10 = 30 u |
10x10 = 100 u |
No scarves |
Scarves |
No scarves |
Scarves |
|
7x7 |
3x7 |
2x10 |
1x10 |
|
49 u |
21 u |
20 u |
10 u |
100 u |
70% =
70100=
710 The number of girls is the repeated identity. Make the number of girls the same. LCM of 7 and 10 is 70.
Number of students who do not wear scarves
= 49 u + 20 u
= 69 u
Total number of students
= 49 u + 21 u + 20 u + 10 u
= 100 u
Percentage of the students in the theme park who do not wear scarves
=
69100 x 100%
= 69%
Answer(s): 69%