Fill in the blanks.
The ratio of children to adults is 7 : 11.
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 |
7x4 = 28 u |
11x4 = 44 u |
|
Women |
Men |
4 |
1x11 |
3x11 |
28 u |
11 u |
33 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 11 and 4 is 44.
Number of children = 28 u
(b)
Number of women = 11 u
(c)
Difference in the number of men and women
= 33 u - 11 u
= 22 u
(d)
Total number of people
= 28 u + 44 u
= 72 u
Answer(s): (a) 28; (b) 11; (c) 22; (d) 72