Fill in the blanks.
The ratio of children to adults is 1 : 2.
The ratio of men to women is 5 : 9.
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 |
1x7 = 7 u |
2x7 = 14 u |
|
Men |
Women |
14 |
5x1 |
9x1 |
7 u |
5 u |
9 u |
(a)
Change ratio into units.
Men : Women : Children
5 : 9 : 5 + 9
5 : 9 : 14
The number of adults is the repeated identity.
LCM of 2 and 14 is 14.
Number of children = 7 u
(b)
Number of men = 5 u
(c)
Difference in the number of women and men
= 9 u - 5 u
= 4 u
(d)
Total number of people
= 7 u + 14 u
= 21 u
Answer(s): (a) 7; (b) 5; (c) 4; (d) 21