Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 1 : 3.
The ratio of girls to boys is 1 : 1.
The number of women to men is 6 : 1.
Let the number of children be 3 u.
- Number of adults = _____ u
- Number of girls = _____ u
- Number of men = _____ u
- Total number of people = _____ u
Adults |
Children |
1 u |
3 u |
Women |
Men |
Girls |
Boys |
6 |
1 |
1 |
1 |
|
17 x 1 u = 17 u |
12 x 3 u = 112 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
1 : 1 : 1 + 1
1 : 1 : 2
Number of adults = 1 u
(b)
Number of children = 3 u
Fraction of the children that were girls =
12 Number of girls
=
12 x 3 u
= 1
12 u
(c)
Number of adults = 1 u
Fraction of the adults that were men =
17 Number of men
=
17 x 1 u
=
17 u
(d)
Total number of people
= 1 u + 3 u
= 4 u
Answer(s): (a) 1; (b) 1
12; (c)
17; (d) 4