Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 5 : 9.
The ratio of girls to boys is 1 : 5.
The number of men to women is 5 : 1.
Let the number of children be 9 u.
- Number of adults = _____ u
- Number of girls = _____ u
- Number of women = _____ u
- Total number of people = _____ u
Adults |
Children |
5 u |
9 u |
Men |
Women |
Girls |
Boys |
5 |
1 |
1 |
5 |
|
16 x 5 u = 56 u |
16 x 9 u = 112 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
1 : 5 : 1 + 5
1 : 5 : 6
Number of adults = 5 u
(b)
Number of children = 9 u
Fraction of the children that were girls =
16 Number of girls
=
16 x 9 u
= 1
12 u
(c)
Number of adults = 5 u
Fraction of the adults that were women =
16 Number of women
=
16 x 5 u
=
56 u
(d)
Total number of people
= 5 u + 9 u
= 14 u
Answer(s): (a) 5; (b) 1
12; (c)
56; (d) 14