Fill in the blanks.
The ratio of children to adults is 3 : 11.
The ratio of men to women is 4 : 11.
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 |
3x15 = 45 u |
11x15 = 165 u |
|
Men |
Women |
15 |
4x11 |
11x11 |
45 u |
44 u |
121 u |
(a)
Change ratio into units.
Men : Women : Children
4 : 11 : 4 + 11
4 : 11 : 15
The number of adults is the repeated identity.
LCM of 11 and 15 is 165.
Number of children = 45 u
(b)
Number of men = 44 u
(c)
Difference in the number of women and men
= 121 u - 44 u
= 77 u
(d)
Total number of people
= 45 u + 165 u
= 210 u
Answer(s): (a) 45; (b) 44; (c) 77; (d) 210