Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 1 : 5.
The ratio of girls to boys is 5 : 6.
The number of women to men is 5 : 3.
Let the number of children be 5 u.
- Number of adults = _____ u
- Number of girls = _____ u
- Number of men = _____ u
- Total number of people = _____ u
Adults |
Children |
1 u |
5 u |
Women |
Men |
Girls |
Boys |
5 |
3 |
5 |
6 |
|
38 x 1 u = 38 u |
511 x 5 u = 2311 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
5 : 6 : 5 + 6
5 : 6 : 11
Number of adults = 1 u
(b)
Number of children = 5 u
Fraction of the children that were girls =
511 Number of girls
=
511 x 5 u
= 2
311 u
(c)
Number of adults = 1 u
Fraction of the adults that were men =
38 Number of men
=
38 x 1 u
=
38 u
(d)
Total number of people
= 1 u + 5 u
= 6 u
Answer(s): (a) 1; (b) 2
311; (c)
38; (d) 6