Fill in the blanks.
The ratio of children to adults is 1 : 12.
The ratio of women to men is 2 : 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 |
1x7 = 7 u |
12x7 = 84 u |
|
Women |
Men |
7 |
2x12 |
5x12 |
7 u |
24 u |
60 u |
(a)
Change ratio into units.
Women : Men : Children
2 : 5 : 2 + 5
2 : 5 : 7
The number of adults is the repeated identity.
LCM of 12 and 7 is 84.
Number of children = 7 u
(b)
Number of women = 24 u
(c)
Difference in the number of men and women
= 60 u - 24 u
= 36 u
(d)
Total number of people
= 7 u + 84 u
= 91 u
Answer(s): (a) 7; (b) 24; (c) 36; (d) 91