Fill in the blanks.
The ratio of children to adults is 2 : 7.
The ratio of women to men is 5 : 8.
Use LCM and find the following.
- Number of children = _____ u
- Number of women = _____ u
- Difference in the number of men and women = _____ u
- Total number of people = _____ u
Children |
Adults |
2x13 = 26 u |
7x13 = 91 u |
|
Women |
Men |
13 |
5x7 |
8x7 |
26 u |
35 u |
56 u |
(a)
Change ratio into units.
Women : Men : Children
5 : 8 : 5 + 8
5 : 8 : 13
The number of adults is the repeated identity.
LCM of 7 and 13 is 91.
Number of children = 26 u
(b)
Number of women = 35 u
(c)
Difference in the number of men and women
= 56 u - 35 u
= 21 u
(d)
Total number of people
= 26 u + 91 u
= 117 u
Answer(s): (a) 26; (b) 35; (c) 21; (d) 117