In a school, there is a total of 230 people.
30% are children.
The rest are adults.
The number of women and men is in the ratio of 2 : 5.
- What percentage of the people are women?
- How many men are there?
Children |
Adults |
Total |
3 u |
7 u |
10 u |
|
Women |
Men |
|
3 u |
2 u |
5 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 women
=
210 x 100%
= 20%
(b)
Total number of people = 10 u
10 u = 230
1 u = 230 ÷ 10 = 23
Number of men
= 5 u
= 5 x 23
= 115
Answer(s): (a) 20%; (b) 115