Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 1 : 11.
The ratio of girls to boys is 2 : 1.
The number of men to women is 3 : 1.
Let the number of children be 11 u.
- Number of adults = _____ u
- Number of girls = _____ u
- Number of women = _____ u
- Total number of people = _____ u
Adults |
Children |
1 u |
11 u |
Men |
Women |
Girls |
Boys |
3 |
1 |
2 |
1 |
|
14 x 1 u = 14 u |
23 x 11 u = 713 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
2 : 1 : 2 + 1
2 : 1 : 3
Number of adults = 1 u
(b)
Number of children = 11 u
Fraction of the children that were girls =
23 Number of girls
=
23 x 11 u
= 7
13 u
(c)
Number of adults = 1 u
Fraction of the adults that were women =
14 Number of women
=
14 x 1 u
=
14 u
(d)
Total number of people
= 1 u + 11 u
= 12 u
Answer(s): (a) 1; (b) 7
13; (c)
14; (d) 12