Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 1 : 1.
The ratio of girls to boys is 5 : 4.
The number of men to women is 1 : 4.
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 |
1 u |
1 u |
Men |
Women |
Girls |
Boys |
1 |
4 |
5 |
4 |
|
45 x 1 u = 45 u |
59 x 1 u = 59 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
5 : 4 : 5 + 4
5 : 4 : 9
Number of adults = 1 u
(b)
Number of children = 1 u
Fraction of the children that were girls =
59 Number of girls
=
59 x 1 u
=
59 u
(c)
Number of adults = 1 u
Fraction of the adults that were women =
45 Number of women
=
45 x 1 u
=
45 u
(d)
Total number of people
= 1 u + 1 u
= 2 u
Answer(s): (a) 1; (b)
59; (c)
45; (d) 2