Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 3 : 1.
The ratio of girls to boys is 1 : 6.
The number of women to men is 5 : 2.
Let the number of children be 1 u.
- Number of adults = _____ u
- Number of girls = _____ u
- Number of men = _____ u
- Total number of people = _____ u
Adults |
Children |
3 u |
1 u |
Women |
Men |
Girls |
Boys |
5 |
2 |
1 |
6 |
|
27 x 3 u = 67 u |
17 x 1 u = 17 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
1 : 6 : 1 + 6
1 : 6 : 7
Number of adults = 3 u
(b)
Number of children = 1 u
Fraction of the children that were girls =
17 Number of girls
=
17 x 1 u
=
17 u
(c)
Number of adults = 3 u
Fraction of the adults that were men =
27 Number of men
=
27 x 3 u
=
67 u
(d)
Total number of people
= 3 u + 1 u
= 4 u
Answer(s): (a) 3; (b)
17; (c)
67; (d) 4