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 3 : 5.
The number of men to women is 6 : 5.
Let the number of children be 3 u.
- Number of adults = _____ u
- Number of girls = _____ u
- Number of women = _____ u
- Total number of people = _____ u
Adults |
Children |
1 u |
3 u |
Men |
Women |
Girls |
Boys |
6 |
5 |
3 |
5 |
|
511 x 1 u = 511 u |
38 x 3 u = 118 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
3 : 5 : 3 + 5
3 : 5 : 8
Number of adults = 1 u
(b)
Number of children = 3 u
Fraction of the children that were girls =
38 Number of girls
=
38 x 3 u
= 1
18 u
(c)
Number of adults = 1 u
Fraction of the adults that were women =
511 Number of women
=
511 x 1 u
=
511 u
(d)
Total number of people
= 1 u + 3 u
= 4 u
Answer(s): (a) 1; (b) 1
18; (c)
511; (d) 4