Fill in the blanks.
The ratio of children to adults is 3 : 10.
The ratio of women to men is 1 : 2.
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 |
3x3 = 9 u |
10x3 = 30 u |
|
Women |
Men |
3 |
1x10 |
2x10 |
9 u |
10 u |
20 u |
(a)
Change ratio into units.
Women : Men : Children
1 : 2 : 1 + 2
1 : 2 : 3
The number of adults is the repeated identity.
LCM of 10 and 3 is 30.
Number of children = 9 u
(b)
Number of women = 10 u
(c)
Difference in the number of men and women
= 20 u - 10 u
= 10 u
(d)
Total number of people
= 9 u + 30 u
= 39 u
Answer(s): (a) 9; (b) 10; (c) 10; (d) 39