Fill in the blanks.
The ratio of children to adults is 3 : 5.
The ratio of women to men is 2 : 5.
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 |
3x7 = 21 u |
5x7 = 35 u |
|
Women |
Men |
7 |
2x5 |
5x5 |
21 u |
10 u |
25 u |
(a)
Change ratio into units.
Women : Men : Children
2 : 5 : 2 + 5
2 : 5 : 7
The number of adults is the repeated identity.
LCM of 5 and 7 is 35.
Number of children = 21 u
(b)
Number of women = 10 u
(c)
Difference in the number of men and women
= 25 u - 10 u
= 15 u
(d)
Total number of people
= 21 u + 35 u
= 56 u
Answer(s): (a) 21; (b) 10; (c) 15; (d) 56