There are some pupils in the fun fair.
710 of them are girls, of whom 40% of them do not wear scarves.
13 of the boys do not wear scarves. What is the percentage of the pupils in the fun fair who wear scarves?
Girls |
Boys |
Total |
7x5 = 35 u |
3x5 = 15 u |
10x5 = 50 u |
No scarves |
Scarves |
No scarves |
Scarves |
|
2x7 |
3x7 |
1x5 |
2x5 |
|
14 u |
21 u |
5 u |
10 u |
50 u |
40% =
40100=
25 The number of girls is the repeated identity. Make the number of girls the same. LCM of 7 and 5 is 35.
Number of pupils who wear scarves
= 21 u + 10 u
= 31 u
Total number of pupils
= 14 u + 21 u + 5 u + 10 u
= 50 u
Percentage of the pupils in the fun fair who wear scarves
=
3150 x 100%
= 62%
Answer(s): 62%