Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 3 : 11.
The ratio of boys to girls is 3 : 2.
The number of women to men is 1 : 4.
Let the number of children be 11 u.
- Number of adults = _____ u
- Number of boys = _____ u
- Number of men = _____ u
- Total number of people = _____ u
Adults |
Children |
3 u |
11 u |
Women |
Men |
Boys |
Girls |
1 |
4 |
3 |
2 |
|
45 x 3 u = 225 u |
35 x 11 u = 635 u |
|
(a)
Change ratio into units.
Boys : Girls : Children
3 : 2 : 3 + 2
3 : 2 : 5
Number of adults = 3 u
(b)
Number of children = 11 u
Fraction of the children that were boys =
35 Number of boys
=
35 x 11 u
= 6
35 u
(c)
Number of adults = 3 u
Fraction of the adults that were men =
45 Number of men
=
45 x 3 u
= 2
25 u
(d)
Total number of people
= 3 u + 11 u
= 14 u
Answer(s): (a) 3; (b) 6
35; (c) 2
25; (d) 14