Fill in the blanks.
The ratio of children to adults is 1 : 7.
The ratio of women to men is 3 : 5.
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 |
1x8 = 8 u |
7x8 = 56 u |
|
Women |
Men |
8 |
3x7 |
5x7 |
8 u |
21 u |
35 u |
(a)
Change ratio into units.
Women : Men : Children
3 : 5 : 3 + 5
3 : 5 : 8
The number of adults is the repeated identity.
LCM of 7 and 8 is 56.
Number of children = 8 u
(b)
Number of women = 21 u
(c)
Difference in the number of men and women
= 35 u - 21 u
= 14 u
(d)
Total number of people
= 8 u + 56 u
= 64 u
Answer(s): (a) 8; (b) 21; (c) 14; (d) 64