Fill in the blanks.
The ratio of children to adults is 2 : 11.
The ratio of women to men is 1 : 8.
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 |
2x9 = 18 u |
11x9 = 99 u |
|
Women |
Men |
9 |
1x11 |
8x11 |
18 u |
11 u |
88 u |
(a)
Change ratio into units.
Women : Men : Children
1 : 8 : 1 + 8
1 : 8 : 9
The number of adults is the repeated identity.
LCM of 11 and 9 is 99.
Number of children = 18 u
(b)
Number of women = 11 u
(c)
Difference in the number of men and women
= 88 u - 11 u
= 77 u
(d)
Total number of people
= 18 u + 99 u
= 117 u
Answer(s): (a) 18; (b) 11; (c) 77; (d) 117