Fill in the blanks.
The ratio of children to adults is 7 : 5.
The ratio of women to men is 3 : 11.
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 |
7x14 = 98 u |
5x14 = 70 u |
|
Women |
Men |
14 |
3x5 |
11x5 |
98 u |
15 u |
55 u |
(a)
Change ratio into units.
Women : Men : Children
3 : 11 : 3 + 11
3 : 11 : 14
The number of adults is the repeated identity.
LCM of 5 and 14 is 70.
Number of children = 98 u
(b)
Number of women = 15 u
(c)
Difference in the number of men and women
= 55 u - 15 u
= 40 u
(d)
Total number of people
= 98 u + 70 u
= 168 u
Answer(s): (a) 98; (b) 15; (c) 40; (d) 168