Fill in the blanks.
The ratio of children to adults is 2 : 1.
The ratio of women to men is 4 : 5.
Use LCM and find the following.
- Number of children = _____ u
- Number of women = _____ u
- Difference in the number of men and women = _____ u
- Total number of people = _____ u
Children |
Adults |
2x9 = 18 u |
1x9 = 9 u |
|
Women |
Men |
9 |
4x1 |
5x1 |
18 u |
4 u |
5 u |
(a)
Change ratio into units.
Women : Men : Children
4 : 5 : 4 + 5
4 : 5 : 9
The number of adults is the repeated identity.
LCM of 1 and 9 is 9.
Number of children = 18 u
(b)
Number of women = 4 u
(c)
Difference in the number of men and women
= 5 u - 4 u
= 1 u
(d)
Total number of people
= 18 u + 9 u
= 27 u
Answer(s): (a) 18; (b) 4; (c) 1; (d) 27