Fill in the blanks.
The ratio of children to adults is 8 : 5.
The ratio of men to women is 5 : 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 |
8x12 = 96 u |
5x12 = 60 u |
|
Men |
Women |
12 |
5x5 |
7x5 |
96 u |
25 u |
35 u |
(a)
Change ratio into units.
Men : Women : Children
5 : 7 : 5 + 7
5 : 7 : 12
The number of adults is the repeated identity.
LCM of 5 and 12 is 60.
Number of children = 96 u
(b)
Number of men = 25 u
(c)
Difference in the number of women and men
= 35 u - 25 u
= 10 u
(d)
Total number of people
= 96 u + 60 u
= 156 u
Answer(s): (a) 96; (b) 25; (c) 10; (d) 156