Fill in the blanks.
The ratio of children to adults is 7 : 2.
The ratio of men to women is 5 : 8.
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 |
7x13 = 91 u |
2x13 = 26 u |
|
Men |
Women |
13 |
5x2 |
8x2 |
91 u |
10 u |
16 u |
(a)
Change ratio into units.
Men : Women : Children
5 : 8 : 5 + 8
5 : 8 : 13
The number of adults is the repeated identity.
LCM of 2 and 13 is 26.
Number of children = 91 u
(b)
Number of men = 10 u
(c)
Difference in the number of women and men
= 16 u - 10 u
= 6 u
(d)
Total number of people
= 91 u + 26 u
= 117 u
Answer(s): (a) 91; (b) 10; (c) 6; (d) 117