Fill in the blanks.
The ratio of children to adults is 3 : 1.
The ratio of women to men is 5 : 12.
Use LCM and find the following.
- Number of children = _____ u
- Number of women = _____ u
- Difference in the number of men and women = _____ u
- Total number of people = _____ u
Children |
Adults |
3x17 = 51 u |
1x17 = 17 u |
|
Women |
Men |
17 |
5x1 |
12x1 |
51 u |
5 u |
12 u |
(a)
Change ratio into units.
Women : Men : Children
5 : 12 : 5 + 12
5 : 12 : 17
The number of adults is the repeated identity.
LCM of 1 and 17 is 17.
Number of children = 51 u
(b)
Number of women = 5 u
(c)
Difference in the number of men and women
= 12 u - 5 u
= 7 u
(d)
Total number of people
= 51 u + 17 u
= 68 u
Answer(s): (a) 51; (b) 5; (c) 7; (d) 68