Fill in the blanks.
The ratio of children to adults is 8 : 7.
The ratio of men to women is 3 : 4.
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 |
8x1 = 8 u |
7x1 = 7 u |
|
Men |
Women |
7 |
3x1 |
4x1 |
8 u |
3 u |
4 u |
(a)
Change ratio into units.
Men : Women : Children
3 : 4 : 3 + 4
3 : 4 : 7
The number of adults is the repeated identity.
LCM of 7 and 7 is 7.
Number of children = 8 u
(b)
Number of men = 3 u
(c)
Difference in the number of women and men
= 4 u - 3 u
= 1 u
(d)
Total number of people
= 8 u + 7 u
= 15 u
Answer(s): (a) 8; (b) 3; (c) 1; (d) 15