Fill in the blanks.
The ratio of children to adults is 1 : 2.
The ratio of women to men is 7 : 8.
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 |
1x15 = 15 u |
2x15 = 30 u |
|
Women |
Men |
15 |
7x2 |
8x2 |
15 u |
14 u |
16 u |
(a)
Change ratio into units.
Women : Men : Children
7 : 8 : 7 + 8
7 : 8 : 15
The number of adults is the repeated identity.
LCM of 2 and 15 is 30.
Number of children = 15 u
(b)
Number of women = 14 u
(c)
Difference in the number of men and women
= 16 u - 14 u
= 2 u
(d)
Total number of people
= 15 u + 30 u
= 45 u
Answer(s): (a) 15; (b) 14; (c) 2; (d) 45