Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 1 : 2.
The ratio of girls to boys is 4 : 3.
The number of men to women is 1 : 2.
Let the number of children be 2 u.
- Number of adults = _____ u
- Number of girls = _____ u
- Number of women = _____ u
- Total number of people = _____ u
Adults |
Children |
1 u |
2 u |
Men |
Women |
Girls |
Boys |
1 |
2 |
4 |
3 |
|
23 x 1 u = 23 u |
47 x 2 u = 117 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
4 : 3 : 4 + 3
4 : 3 : 7
Number of adults = 1 u
(b)
Number of children = 2 u
Fraction of the children that were girls =
47 Number of girls
=
47 x 2 u
= 1
17 u
(c)
Number of adults = 1 u
Fraction of the adults that were women =
23 Number of women
=
23 x 1 u
=
23 u
(d)
Total number of people
= 1 u + 2 u
= 3 u
Answer(s): (a) 1; (b) 1
17; (c)
23; (d) 3