Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 5 : 12.
The ratio of girls to boys is 1 : 6.
The number of men to women is 1 : 4.
Let the number of children be 12 u.
- Number of adults = _____ u
- Number of girls = _____ u
- Number of women = _____ u
- Total number of people = _____ u
Adults |
Children |
5 u |
12 u |
Men |
Women |
Girls |
Boys |
1 |
4 |
1 |
6 |
|
45 x 5 u = 4 u |
17 x 12 u = 157 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
1 : 6 : 1 + 6
1 : 6 : 7
Number of adults = 5 u
(b)
Number of children = 12 u
Fraction of the children that were girls =
17 Number of girls
=
17 x 12 u
= 1
57 u
(c)
Number of adults = 5 u
Fraction of the adults that were women =
45 Number of women
=
45 x 5 u
= 4 u
(d)
Total number of people
= 5 u + 12 u
= 17 u
Answer(s): (a) 5; (b) 1
57; (c) 4; (d) 17