Fill in the blanks.
The ratio of children to adults is 9 : 10.
The ratio of men to women is 1 : 2.
Use LCM and find the following.
- Number of children = _____ u
- Number of men = _____ u
- Difference in the number of women and men = _____ u
- Total number of people = _____ u
Children |
Adults |
9x3 = 27 u |
10x3 = 30 u |
|
Men |
Women |
3 |
1x10 |
2x10 |
27 u |
10 u |
20 u |
(a)
Change ratio into units.
Men : Women : Children
1 : 2 : 1 + 2
1 : 2 : 3
The number of adults is the repeated identity.
LCM of 10 and 3 is 30.
Number of children = 27 u
(b)
Number of men = 10 u
(c)
Difference in the number of women and men
= 20 u - 10 u
= 10 u
(d)
Total number of people
= 27 u + 30 u
= 57 u
Answer(s): (a) 27; (b) 10; (c) 10; (d) 57