Fill in the blanks.
The ratio of children to adults is 1 : 10.
The ratio of women to men is 7 : 10.
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 |
1x17 = 17 u |
10x17 = 170 u |
|
Women |
Men |
17 |
7x10 |
10x10 |
17 u |
70 u |
100 u |
(a)
Change ratio into units.
Women : Men : Children
7 : 10 : 7 + 10
7 : 10 : 17
The number of adults is the repeated identity.
LCM of 10 and 17 is 170.
Number of children = 17 u
(b)
Number of women = 70 u
(c)
Difference in the number of men and women
= 100 u - 70 u
= 30 u
(d)
Total number of people
= 17 u + 170 u
= 187 u
Answer(s): (a) 17; (b) 70; (c) 30; (d) 187