Fill in the blanks.
The ratio of children to adults is 1 : 9.
The ratio of women to men is 1 : 3.
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 |
1x4 = 4 u |
9x4 = 36 u |
|
Women |
Men |
4 |
1x9 |
3x9 |
4 u |
9 u |
27 u |
(a)
Change ratio into units.
Women : Men : Children
1 : 3 : 1 + 3
1 : 3 : 4
The number of adults is the repeated identity.
LCM of 9 and 4 is 36.
Number of children = 4 u
(b)
Number of women = 9 u
(c)
Difference in the number of men and women
= 27 u - 9 u
= 18 u
(d)
Total number of people
= 4 u + 36 u
= 40 u
Answer(s): (a) 4; (b) 9; (c) 18; (d) 40