Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 3 : 8.
The ratio of girls to boys is 4 : 3.
The number of women to men is 5 : 6.
Let the number of children be 8 u.
- Number of adults = _____ u
- Number of girls = _____ u
- Number of men = _____ u
- Total number of people = _____ u
Adults |
Children |
3 u |
8 u |
Women |
Men |
Girls |
Boys |
5 |
6 |
4 |
3 |
|
611 x 3 u = 1711 u |
47 x 8 u = 447 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
4 : 3 : 4 + 3
4 : 3 : 7
Number of adults = 3 u
(b)
Number of children = 8 u
Fraction of the children that were girls =
47 Number of girls
=
47 x 8 u
= 4
47 u
(c)
Number of adults = 3 u
Fraction of the adults that were men =
611 Number of men
=
611 x 3 u
= 1
711 u
(d)
Total number of people
= 3 u + 8 u
= 11 u
Answer(s): (a) 3; (b) 4
47; (c) 1
711; (d) 11