Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 2 : 3.
The ratio of girls to boys is 5 : 4.
The number of men to women is 2 : 3.
Let the number of children be 3 u.
- Number of adults = _____ u
- Number of girls = _____ u
- Number of women = _____ u
- Total number of people = _____ u
Adults |
Children |
2 u |
3 u |
Men |
Women |
Girls |
Boys |
2 |
3 |
5 |
4 |
|
35 x 2 u = 115 u |
59 x 3 u = 123 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
5 : 4 : 5 + 4
5 : 4 : 9
Number of adults = 2 u
(b)
Number of children = 3 u
Fraction of the children that were girls =
59 Number of girls
=
59 x 3 u
= 1
23 u
(c)
Number of adults = 2 u
Fraction of the adults that were women =
35 Number of women
=
35 x 2 u
= 1
15 u
(d)
Total number of people
= 2 u + 3 u
= 5 u
Answer(s): (a) 2; (b) 1
23; (c) 1
15; (d) 5