Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 9 : 4.
The ratio of girls to boys is 5 : 4.
The number of men to women is 1 : 3.
Let the number of children be 4 u.
- Number of adults = _____ u
- Number of girls = _____ u
- Number of women = _____ u
- Total number of people = _____ u
Adults |
Children |
9 u |
4 u |
Men |
Women |
Girls |
Boys |
1 |
3 |
5 |
4 |
|
34 x 9 u = 634 u |
59 x 4 u = 229 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
5 : 4 : 5 + 4
5 : 4 : 9
Number of adults = 9 u
(b)
Number of children = 4 u
Fraction of the children that were girls =
59 Number of girls
=
59 x 4 u
= 2
29 u
(c)
Number of adults = 9 u
Fraction of the adults that were women =
34 Number of women
=
34 x 9 u
= 6
34 u
(d)
Total number of people
= 9 u + 4 u
= 13 u
Answer(s): (a) 9; (b) 2
29; (c) 6
34; (d) 13