Fill in the blanks.
The ratio of children to adults is 4 : 3.
The ratio of women to men is 1 : 4.
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 |
4x5 = 20 u |
3x5 = 15 u |
|
Women |
Men |
5 |
1x3 |
4x3 |
20 u |
3 u |
12 u |
(a)
Change ratio into units.
Women : Men : Children
1 : 4 : 1 + 4
1 : 4 : 5
The number of adults is the repeated identity.
LCM of 3 and 5 is 15.
Number of children = 20 u
(b)
Number of women = 3 u
(c)
Difference in the number of men and women
= 12 u - 3 u
= 9 u
(d)
Total number of people
= 20 u + 15 u
= 35 u
Answer(s): (a) 20; (b) 3; (c) 9; (d) 35