Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 2 : 9.
The ratio of boys to girls is 3 : 2.
The number of women to men is 1 : 6.
Let the number of children be 9 u.
- Number of adults = _____ u
- Number of boys = _____ u
- Number of men = _____ u
- Total number of people = _____ u
Adults |
Children |
2 u |
9 u |
Women |
Men |
Boys |
Girls |
1 |
6 |
3 |
2 |
|
67 x 2 u = 157 u |
35 x 9 u = 525 u |
|
(a)
Change ratio into units.
Boys : Girls : Children
3 : 2 : 3 + 2
3 : 2 : 5
Number of adults = 2 u
(b)
Number of children = 9 u
Fraction of the children that were boys =
35 Number of boys
=
35 x 9 u
= 5
25 u
(c)
Number of adults = 2 u
Fraction of the adults that were men =
67 Number of men
=
67 x 2 u
= 1
57 u
(d)
Total number of people
= 2 u + 9 u
= 11 u
Answer(s): (a) 2; (b) 5
25; (c) 1
57; (d) 11