Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 5 : 8.
The ratio of girls to boys is 2 : 3.
The number of men to women is 2 : 1.
Let the number of children be 8 u.
- Number of adults = _____ u
- Number of girls = _____ u
- Number of women = _____ u
- Total number of people = _____ u
Adults |
Children |
5 u |
8 u |
Men |
Women |
Girls |
Boys |
2 |
1 |
2 |
3 |
|
13 x 5 u = 123 u |
25 x 8 u = 315 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
2 : 3 : 2 + 3
2 : 3 : 5
Number of adults = 5 u
(b)
Number of children = 8 u
Fraction of the children that were girls =
25 Number of girls
=
25 x 8 u
= 3
15 u
(c)
Number of adults = 5 u
Fraction of the adults that were women =
13 Number of women
=
13 x 5 u
= 1
23 u
(d)
Total number of people
= 5 u + 8 u
= 13 u
Answer(s): (a) 5; (b) 3
15; (c) 1
23; (d) 13