Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 1 : 11.
The ratio of girls to boys is 6 : 1.
The number of women to men is 5 : 2.
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 |
1 u |
11 u |
Women |
Men |
Girls |
Boys |
5 |
2 |
6 |
1 |
|
27 x 1 u = 27 u |
67 x 11 u = 937 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
6 : 1 : 6 + 1
6 : 1 : 7
Number of adults = 1 u
(b)
Number of children = 11 u
Fraction of the children that were girls =
67 Number of girls
=
67 x 11 u
= 9
37 u
(c)
Number of adults = 1 u
Fraction of the adults that were men =
27 Number of men
=
27 x 1 u
=
27 u
(d)
Total number of people
= 1 u + 11 u
= 12 u
Answer(s): (a) 1; (b) 9
37; (c)
27; (d) 12