Fill in the blanks.
The ratio of children to adults is 6 : 7.
The ratio of women to men is 1 : 4.
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 |
6x5 = 30 u |
7x5 = 35 u |
|
Women |
Men |
5 |
1x7 |
4x7 |
30 u |
7 u |
28 u |
(a)
Change ratio into units.
Women : Men : Children
1 : 4 : 1 + 4
1 : 4 : 5
The number of adults is the repeated identity.
LCM of 7 and 5 is 35.
Number of children = 30 u
(b)
Number of women = 7 u
(c)
Difference in the number of men and women
= 28 u - 7 u
= 21 u
(d)
Total number of people
= 30 u + 35 u
= 65 u
Answer(s): (a) 30; (b) 7; (c) 21; (d) 65