In a school, there is a total of 230 people.
30% are children.
The rest are adults.
The number of men and women is in the ratio of 3 : 4.
- What percentage of the people are men?
- How many women are there?
Children |
Adults |
Total |
3 u |
7 u |
10 u |
|
Men |
Women |
|
3 u |
3 u |
4 u |
10 u |
(a)
30% =
30100 =
310 The number of adults is the combined repeated identity.
Children : Adults
3 : 10 - 3
3 : 7
Percentage of the people that are men
=
310 x 100%
= 30%
(b)
Total number of people = 10 u
10 u = 230
1 u = 230 ÷ 10 = 23
Number of women
= 4 u
= 4 x 23
= 92
Answer(s): (a) 30%; (b) 92