Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 8 : 11.
The ratio of girls to boys is 1 : 1.
The number of men to women is 2 : 5.
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 |
8 u |
11 u |
Men |
Women |
Girls |
Boys |
2 |
5 |
1 |
1 |
|
57 x 8 u = 557 u |
12 x 11 u = 512 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
1 : 1 : 1 + 1
1 : 1 : 2
Number of adults = 8 u
(b)
Number of children = 11 u
Fraction of the children that were girls =
12 Number of girls
=
12 x 11 u
= 5
12 u
(c)
Number of adults = 8 u
Fraction of the adults that were women =
57 Number of women
=
57 x 8 u
= 5
57 u
(d)
Total number of people
= 8 u + 11 u
= 19 u
Answer(s): (a) 8; (b) 5
12; (c) 5
57; (d) 19