Fill in the blanks.
The ratio of children to adults is 7 : 10.
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 |
7x19 = 133 u |
10x19 = 190 u |
|
Women |
Men |
19 |
7x10 |
12x10 |
133 u |
70 u |
120 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 10 and 19 is 190.
Number of children = 133 u
(b)
Number of women = 70 u
(c)
Difference in the number of men and women
= 120 u - 70 u
= 50 u
(d)
Total number of people
= 133 u + 190 u
= 323 u
Answer(s): (a) 133; (b) 70; (c) 50; (d) 323