Fill in the blanks.
The ratio of children to adults is 2 : 3.
The ratio of women to men is 1 : 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 |
2x13 = 26 u |
3x13 = 39 u |
|
Women |
Men |
13 |
1x3 |
12x3 |
26 u |
3 u |
36 u |
(a)
Change ratio into units.
Women : Men : Children
1 : 12 : 1 + 12
1 : 12 : 13
The number of adults is the repeated identity.
LCM of 3 and 13 is 39.
Number of children = 26 u
(b)
Number of women = 3 u
(c)
Difference in the number of men and women
= 36 u - 3 u
= 33 u
(d)
Total number of people
= 26 u + 39 u
= 65 u
Answer(s): (a) 26; (b) 3; (c) 33; (d) 65