Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 9 : 10.
The ratio of girls to boys is 1 : 3.
The number of men to women is 5 : 6.
Let the number of children be 10 u.
- Number of adults = _____ u
- Number of girls = _____ u
- Number of women = _____ u
- Total number of people = _____ u
Adults |
Children |
9 u |
10 u |
Men |
Women |
Girls |
Boys |
5 |
6 |
1 |
3 |
|
611 x 9 u = 41011 u |
14 x 10 u = 212 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
1 : 3 : 1 + 3
1 : 3 : 4
Number of adults = 9 u
(b)
Number of children = 10 u
Fraction of the children that were girls =
14 Number of girls
=
14 x 10 u
= 2
12 u
(c)
Number of adults = 9 u
Fraction of the adults that were women =
611 Number of women
=
611 x 9 u
= 4
1011 u
(d)
Total number of people
= 9 u + 10 u
= 19 u
Answer(s): (a) 9; (b) 2
12; (c) 4
1011; (d) 19