Fill in the blanks.
The ratio of children to adults is 1 : 2.
The ratio of men to women is 2 : 7.
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 |
1x9 = 9 u |
2x9 = 18 u |
|
Men |
Women |
9 |
2x2 |
7x2 |
9 u |
4 u |
14 u |
(a)
Change ratio into units.
Men : Women : Children
2 : 7 : 2 + 7
2 : 7 : 9
The number of adults is the repeated identity.
LCM of 2 and 9 is 18.
Number of children = 9 u
(b)
Number of men = 4 u
(c)
Difference in the number of women and men
= 14 u - 4 u
= 10 u
(d)
Total number of people
= 9 u + 18 u
= 27 u
Answer(s): (a) 9; (b) 4; (c) 10; (d) 27