Fill in the blanks.
The ratio of children to adults is 5 : 3.
The ratio of men to women is 2 : 7.
Use LCM and find the following.
- Number of children = _____ u
- Number of men = _____ u
- Difference in the number of women and men = _____ u
- Total number of people = _____ u
Children |
Adults |
5x3 = 15 u |
3x3 = 9 u |
|
Men |
Women |
9 |
2x1 |
7x1 |
15 u |
2 u |
7 u |
(a)
Change ratio into units.
Men : Women : Children
2 : 7 : 2 + 7
2 : 7 : 9
The number of adults is the repeated identity.
LCM of 3 and 9 is 9.
Number of children = 15 u
(b)
Number of men = 2 u
(c)
Difference in the number of women and men
= 7 u - 2 u
= 5 u
(d)
Total number of people
= 15 u + 9 u
= 24 u
Answer(s): (a) 15; (b) 2; (c) 5; (d) 24