Fill in the blanks.
The ratio of children to adults is 2 : 1.
The ratio of women to men is 5 : 7.
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 |
2x12 = 24 u |
1x12 = 12 u |
|
Women |
Men |
12 |
5x1 |
7x1 |
24 u |
5 u |
7 u |
(a)
Change ratio into units.
Women : Men : Children
5 : 7 : 5 + 7
5 : 7 : 12
The number of adults is the repeated identity.
LCM of 1 and 12 is 12.
Number of children = 24 u
(b)
Number of women = 5 u
(c)
Difference in the number of men and women
= 7 u - 5 u
= 2 u
(d)
Total number of people
= 24 u + 12 u
= 36 u
Answer(s): (a) 24; (b) 5; (c) 2; (d) 36