Fill in the blanks.
The ratio of children to adults is 9 : 4.
The ratio of men to women is 7 : 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 |
9x4 = 36 u |
4x4 = 16 u |
|
Men |
Women |
16 |
7x1 |
9x1 |
36 u |
7 u |
9 u |
(a)
Change ratio into units.
Men : Women : Children
7 : 9 : 7 + 9
7 : 9 : 16
The number of adults is the repeated identity.
LCM of 4 and 16 is 16.
Number of children = 36 u
(b)
Number of men = 7 u
(c)
Difference in the number of women and men
= 9 u - 7 u
= 2 u
(d)
Total number of people
= 36 u + 16 u
= 52 u
Answer(s): (a) 36; (b) 7; (c) 2; (d) 52