Fill in the blanks.
The ratio of children to adults is 2 : 7.
The ratio of men to women is 5 : 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 |
2x16 = 32 u |
7x16 = 112 u |
|
Men |
Women |
16 |
5x7 |
11x7 |
32 u |
35 u |
77 u |
(a)
Change ratio into units.
Men : Women : Children
5 : 11 : 5 + 11
5 : 11 : 16
The number of adults is the repeated identity.
LCM of 7 and 16 is 112.
Number of children = 32 u
(b)
Number of men = 35 u
(c)
Difference in the number of women and men
= 77 u - 35 u
= 42 u
(d)
Total number of people
= 32 u + 112 u
= 144 u
Answer(s): (a) 32; (b) 35; (c) 42; (d) 144