Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 8 : 5.
The ratio of girls to boys is 3 : 4.
The number of men to women is 6 : 5.
Let the number of children be 5 u.
- Number of adults = _____ u
- Number of girls = _____ u
- Number of women = _____ u
- Total number of people = _____ u
Adults |
Children |
8 u |
5 u |
Men |
Women |
Girls |
Boys |
6 |
5 |
3 |
4 |
|
511 x 8 u = 3711 u |
37 x 5 u = 217 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
3 : 4 : 3 + 4
3 : 4 : 7
Number of adults = 8 u
(b)
Number of children = 5 u
Fraction of the children that were girls =
37 Number of girls
=
37 x 5 u
= 2
17 u
(c)
Number of adults = 8 u
Fraction of the adults that were women =
511 Number of women
=
511 x 8 u
= 3
711 u
(d)
Total number of people
= 8 u + 5 u
= 13 u
Answer(s): (a) 8; (b) 2
17; (c) 3
711; (d) 13