Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 5 : 6.
The ratio of boys to girls is 4 : 3.
The number of women to men is 4 : 1.
Let the number of children be 6 u.
- Number of adults = _____ u
- Number of boys = _____ u
- Number of men = _____ u
- Total number of people = _____ u
Adults |
Children |
5 u |
6 u |
Women |
Men |
Boys |
Girls |
4 |
1 |
4 |
3 |
|
15 x 5 u = 1 u |
47 x 6 u = 337 u |
|
(a)
Change ratio into units.
Boys : Girls : Children
4 : 3 : 4 + 3
4 : 3 : 7
Number of adults = 5 u
(b)
Number of children = 6 u
Fraction of the children that were boys =
47 Number of boys
=
47 x 6 u
= 3
37 u
(c)
Number of adults = 5 u
Fraction of the adults that were men =
15 Number of men
=
15 x 5 u
= 1 u
(d)
Total number of people
= 5 u + 6 u
= 11 u
Answer(s): (a) 5; (b) 3
37; (c) 1; (d) 11