Fill in the blanks.
The ratio of children to adults is 5 : 2.
The ratio of men to women is 4 : 5.
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 |
5x9 = 45 u |
2x9 = 18 u |
|
Men |
Women |
9 |
4x2 |
5x2 |
45 u |
8 u |
10 u |
(a)
Change ratio into units.
Men : Women : Children
4 : 5 : 4 + 5
4 : 5 : 9
The number of adults is the repeated identity.
LCM of 2 and 9 is 18.
Number of children = 45 u
(b)
Number of men = 8 u
(c)
Difference in the number of women and men
= 10 u - 8 u
= 2 u
(d)
Total number of people
= 45 u + 18 u
= 63 u
Answer(s): (a) 45; (b) 8; (c) 2; (d) 63