Fill in the blanks.
The ratio of children to adults is 3 : 2.
The ratio of men to women is 3 : 5.
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 |
3x4 = 12 u |
2x4 = 8 u |
|
Men |
Women |
8 |
3x1 |
5x1 |
12 u |
3 u |
5 u |
(a)
Change ratio into units.
Men : Women : Children
3 : 5 : 3 + 5
3 : 5 : 8
The number of adults is the repeated identity.
LCM of 2 and 8 is 8.
Number of children = 12 u
(b)
Number of men = 3 u
(c)
Difference in the number of women and men
= 5 u - 3 u
= 2 u
(d)
Total number of people
= 12 u + 8 u
= 20 u
Answer(s): (a) 12; (b) 3; (c) 2; (d) 20