Fill in the blanks.
The ratio of children to adults is 1 : 5.
The ratio of men to women is 5 : 12.
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 |
1x17 = 17 u |
5x17 = 85 u |
|
Men |
Women |
17 |
5x5 |
12x5 |
17 u |
25 u |
60 u |
(a)
Change ratio into units.
Men : Women : Children
5 : 12 : 5 + 12
5 : 12 : 17
The number of adults is the repeated identity.
LCM of 5 and 17 is 85.
Number of children = 17 u
(b)
Number of men = 25 u
(c)
Difference in the number of women and men
= 60 u - 25 u
= 35 u
(d)
Total number of people
= 17 u + 85 u
= 102 u
Answer(s): (a) 17; (b) 25; (c) 35; (d) 102