Fill in the blanks.
The ratio of children to adults is 8 : 3.
The ratio of men to women is 2 : 3.
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 |
8x5 = 40 u |
3x5 = 15 u |
|
Men |
Women |
5 |
2x3 |
3x3 |
40 u |
6 u |
9 u |
(a)
Change ratio into units.
Men : Women : Children
2 : 3 : 2 + 3
2 : 3 : 5
The number of adults is the repeated identity.
LCM of 3 and 5 is 15.
Number of children = 40 u
(b)
Number of men = 6 u
(c)
Difference in the number of women and men
= 9 u - 6 u
= 3 u
(d)
Total number of people
= 40 u + 15 u
= 55 u
Answer(s): (a) 40; (b) 6; (c) 3; (d) 55