Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 9 : 5.
The ratio of boys to girls is 6 : 5.
The number of women to men is 2 : 3.
Let the number of children be 5 u.
- Number of adults = _____ u
- Number of boys = _____ u
- Number of men = _____ u
- Total number of people = _____ u
Adults |
Children |
9 u |
5 u |
Women |
Men |
Boys |
Girls |
2 |
3 |
6 |
5 |
|
35 x 9 u = 525 u |
611 x 5 u = 2811 u |
|
(a)
Change ratio into units.
Boys : Girls : Children
6 : 5 : 6 + 5
6 : 5 : 11
Number of adults = 9 u
(b)
Number of children = 5 u
Fraction of the children that were boys =
611 Number of boys
=
611 x 5 u
= 2
811 u
(c)
Number of adults = 9 u
Fraction of the adults that were men =
35 Number of men
=
35 x 9 u
= 5
25 u
(d)
Total number of people
= 9 u + 5 u
= 14 u
Answer(s): (a) 9; (b) 2
811; (c) 5
25; (d) 14