Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 2 : 1.
The ratio of girls to boys is 3 : 1.
The number of men to women is 1 : 2.
Let the number of children be 1 u.
- Number of adults = _____ u
- Number of girls = _____ u
- Number of women = _____ u
- Total number of people = _____ u
Adults |
Children |
2 u |
1 u |
Men |
Women |
Girls |
Boys |
1 |
2 |
3 |
1 |
|
23 x 2 u = 113 u |
34 x 1 u = 34 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
3 : 1 : 3 + 1
3 : 1 : 4
Number of adults = 2 u
(b)
Number of children = 1 u
Fraction of the children that were girls =
34 Number of girls
=
34 x 1 u
=
34 u
(c)
Number of adults = 2 u
Fraction of the adults that were women =
23 Number of women
=
23 x 2 u
= 1
13 u
(d)
Total number of people
= 2 u + 1 u
= 3 u
Answer(s): (a) 2; (b)
34; (c) 1
13; (d) 3