Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 1 : 6.
The ratio of girls to boys is 1 : 2.
The number of women to men is 3 : 2.
Let the number of children be 6 u.
- Number of adults = _____ u
- Number of girls = _____ u
- Number of men = _____ u
- Total number of people = _____ u
Adults |
Children |
1 u |
6 u |
Women |
Men |
Girls |
Boys |
3 |
2 |
1 |
2 |
|
25 x 1 u = 25 u |
13 x 6 u = 2 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
1 : 2 : 1 + 2
1 : 2 : 3
Number of adults = 1 u
(b)
Number of children = 6 u
Fraction of the children that were girls =
13 Number of girls
=
13 x 6 u
= 2 u
(c)
Number of adults = 1 u
Fraction of the adults that were men =
25 Number of men
=
25 x 1 u
=
25 u
(d)
Total number of people
= 1 u + 6 u
= 7 u
Answer(s): (a) 1; (b) 2; (c)
25; (d) 7