Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 8 : 5.
The ratio of boys to girls is 1 : 3.
The number of women to men is 4 : 5.
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 |
8 u |
5 u |
Women |
Men |
Boys |
Girls |
4 |
5 |
1 |
3 |
|
59 x 8 u = 449 u |
14 x 5 u = 114 u |
|
(a)
Change ratio into units.
Boys : Girls : Children
1 : 3 : 1 + 3
1 : 3 : 4
Number of adults = 8 u
(b)
Number of children = 5 u
Fraction of the children that were boys =
14 Number of boys
=
14 x 5 u
= 1
14 u
(c)
Number of adults = 8 u
Fraction of the adults that were men =
59 Number of men
=
59 x 8 u
= 4
49 u
(d)
Total number of people
= 8 u + 5 u
= 13 u
Answer(s): (a) 8; (b) 1
14; (c) 4
49; (d) 13