Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 7 : 10.
The ratio of girls to boys is 3 : 2.
The number of women to men is 1 : 3.
Let the number of children be 10 u.
- Number of adults = _____ u
- Number of girls = _____ u
- Number of men = _____ u
- Total number of people = _____ u
Adults |
Children |
7 u |
10 u |
Women |
Men |
Girls |
Boys |
1 |
3 |
3 |
2 |
|
34 x 7 u = 514 u |
35 x 10 u = 6 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
3 : 2 : 3 + 2
3 : 2 : 5
Number of adults = 7 u
(b)
Number of children = 10 u
Fraction of the children that were girls =
35 Number of girls
=
35 x 10 u
= 6 u
(c)
Number of adults = 7 u
Fraction of the adults that were men =
34 Number of men
=
34 x 7 u
= 5
14 u
(d)
Total number of people
= 7 u + 10 u
= 17 u
Answer(s): (a) 7; (b) 6; (c) 5
14; (d) 17