Fill in the blanks.
The ratio of children to adults is 8 : 3.
The ratio of women to men is 3 : 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 |
8x7 = 56 u |
3x7 = 21 u |
|
Women |
Men |
7 |
3x3 |
4x3 |
56 u |
9 u |
12 u |
(a)
Change ratio into units.
Women : Men : Children
3 : 4 : 3 + 4
3 : 4 : 7
The number of adults is the repeated identity.
LCM of 3 and 7 is 21.
Number of children = 56 u
(b)
Number of women = 9 u
(c)
Difference in the number of men and women
= 12 u - 9 u
= 3 u
(d)
Total number of people
= 56 u + 21 u
= 77 u
Answer(s): (a) 56; (b) 9; (c) 3; (d) 77