In a school, there is a total of 940 people.
10% are children.
The rest are adults.
The number of men and women is in the ratio of 1 : 5.
- What percentage of the people are men?
- How many women are there?
Children |
Adults |
Total |
1x2 |
9x2 |
10x2 |
|
Men |
Women |
|
|
1x3 |
5x3 |
|
2 u |
3 u |
15 u |
20 u |
(a)
10% =
10100 =
110 Children : Adults
1 : 10 - 1
1 : 9
Men : Women : Adults
1 : 5 : 6
The number of adults is the combined repeated identity.
Make the number of adults the same using the LCM of 9 and 6.
LCM of 9 and 6 = 18
Percentage of the people that are men
=
320 x 100%
= 15%
(b)
Total number of people = 20 u
20 u = 940
1 u = 940 ÷ 20 = 47
Number of women
= 15 u
= 15 x 47
= 705
Answer(s): (a) 15%; (b) 705