Fill in the blanks.
The ratio of children to adults is 1 : 3.
The ratio of women to men is 7 : 11.
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 |
1x6 = 6 u |
3x6 = 18 u |
|
Women |
Men |
18 |
7x1 |
11x1 |
6 u |
7 u |
11 u |
(a)
Change ratio into units.
Women : Men : Children
7 : 11 : 7 + 11
7 : 11 : 18
The number of adults is the repeated identity.
LCM of 3 and 18 is 18.
Number of children = 6 u
(b)
Number of women = 7 u
(c)
Difference in the number of men and women
= 11 u - 7 u
= 4 u
(d)
Total number of people
= 6 u + 18 u
= 24 u
Answer(s): (a) 6; (b) 7; (c) 4; (d) 24