Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 5 : 11.
The ratio of girls to boys is 5 : 2.
The number of women to men is 3 : 1.
Let the number of children be 11 u.
- Number of adults = _____ u
- Number of girls = _____ u
- Number of men = _____ u
- Total number of people = _____ u
Adults |
Children |
5 u |
11 u |
Women |
Men |
Girls |
Boys |
3 |
1 |
5 |
2 |
|
14 x 5 u = 114 u |
57 x 11 u = 767 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
5 : 2 : 5 + 2
5 : 2 : 7
Number of adults = 5 u
(b)
Number of children = 11 u
Fraction of the children that were girls =
57 Number of girls
=
57 x 11 u
= 7
67 u
(c)
Number of adults = 5 u
Fraction of the adults that were men =
14 Number of men
=
14 x 5 u
= 1
14 u
(d)
Total number of people
= 5 u + 11 u
= 16 u
Answer(s): (a) 5; (b) 7
67; (c) 1
14; (d) 16