Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 1 : 1.
The ratio of girls to boys is 1 : 4.
The number of women to men is 2 : 3.
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 |
1 u |
1 u |
Women |
Men |
Girls |
Boys |
2 |
3 |
1 |
4 |
|
35 x 1 u = 35 u |
15 x 1 u = 15 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
1 : 4 : 1 + 4
1 : 4 : 5
Number of adults = 1 u
(b)
Number of children = 1 u
Fraction of the children that were girls =
15 Number of girls
=
15 x 1 u
=
15 u
(c)
Number of adults = 1 u
Fraction of the adults that were men =
35 Number of men
=
35 x 1 u
=
35 u
(d)
Total number of people
= 1 u + 1 u
= 2 u
Answer(s): (a) 1; (b)
15; (c)
35; (d) 2