Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 3 : 5.
The ratio of girls to boys is 1 : 1.
The number of men to women is 4 : 3.
Let the number of children be 5 u.
- Number of adults = _____ u
- Number of girls = _____ u
- Number of women = _____ u
- Total number of people = _____ u
Adults |
Children |
3 u |
5 u |
Men |
Women |
Girls |
Boys |
4 |
3 |
1 |
1 |
|
37 x 3 u = 127 u |
12 x 5 u = 212 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
1 : 1 : 1 + 1
1 : 1 : 2
Number of adults = 3 u
(b)
Number of children = 5 u
Fraction of the children that were girls =
12 Number of girls
=
12 x 5 u
= 2
12 u
(c)
Number of adults = 3 u
Fraction of the adults that were women =
37 Number of women
=
37 x 3 u
= 1
27 u
(d)
Total number of people
= 3 u + 5 u
= 8 u
Answer(s): (a) 3; (b) 2
12; (c) 1
27; (d) 8