Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 4 : 3.
The ratio of girls to boys is 3 : 1.
The number of men to women is 3 : 5.
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 |
4 u |
3 u |
Men |
Women |
Girls |
Boys |
3 |
5 |
3 |
1 |
|
58 x 4 u = 212 u |
34 x 3 u = 214 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
3 : 1 : 3 + 1
3 : 1 : 4
Number of adults = 4 u
(b)
Number of children = 3 u
Fraction of the children that were girls =
34 Number of girls
=
34 x 3 u
= 2
14 u
(c)
Number of adults = 4 u
Fraction of the adults that were women =
58 Number of women
=
58 x 4 u
= 2
12 u
(d)
Total number of people
= 4 u + 3 u
= 7 u
Answer(s): (a) 4; (b) 2
14; (c) 2
12; (d) 7