Fill in the blanks.
The ratio of children to adults is 2 : 3.
The ratio of men to women is 4 : 9.
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 |
2x13 = 26 u |
3x13 = 39 u |
|
Men |
Women |
13 |
4x3 |
9x3 |
26 u |
12 u |
27 u |
(a)
Change ratio into units.
Men : Women : Children
4 : 9 : 4 + 9
4 : 9 : 13
The number of adults is the repeated identity.
LCM of 3 and 13 is 39.
Number of children = 26 u
(b)
Number of men = 12 u
(c)
Difference in the number of women and men
= 27 u - 12 u
= 15 u
(d)
Total number of people
= 26 u + 39 u
= 65 u
Answer(s): (a) 26; (b) 12; (c) 15; (d) 65