Fill in the blanks.
The ratio of children to adults is 1 : 1.
The ratio of women to men is 7 : 12.
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 |
1x19 = 19 u |
1x19 = 19 u |
|
Women |
Men |
19 |
7x1 |
12x1 |
19 u |
7 u |
12 u |
(a)
Change ratio into units.
Women : Men : Children
7 : 12 : 7 + 12
7 : 12 : 19
The number of adults is the repeated identity.
LCM of 1 and 19 is 19.
Number of children = 19 u
(b)
Number of women = 7 u
(c)
Difference in the number of men and women
= 12 u - 7 u
= 5 u
(d)
Total number of people
= 19 u + 19 u
= 38 u
Answer(s): (a) 19; (b) 7; (c) 5; (d) 38