Fill in the blanks in whole numbers or decimals.
The ratio of adults to children is 5 : 6.
The ratio of girls to boys is 7 : 3.
The number of men to women is 2 : 3.
Let the number of children be 6 u.
- Number of adults = _____ u
- Number of girls = _____ u
- Number of women = _____ u
- Difference between the number of girls and women = _____ u
Adults |
Children |
5 u |
6 u |
Men |
Women |
Girls |
Boys |
2 |
3 |
7 |
3 |
|
35 x 5 u = 3 u |
710 x 6 u = 4.2 u |
|
(a)
Change ratio into units.
Number of adults = 5 u
(b)
Number of children = 6 u
Girls : Boys : Children
7 : 3 : 7 + 3
7 : 3 : 10
Fraction of the children that were girls =
710 Number of girls
=
710 x 6 u
= 4.2 u
(c)
Number of adults = 5 u
Fraction of the adults that were women =
35 Number of women
=
35 x 5 u
= 3 u
(d)
Difference between the number of girls and women
= 4.2 u - 3 u
= 1.2 u
Answer(s): (a) 5; (b) 4.2; (c) 3; (d) 1.2