Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 1 : 6.
The ratio of boys to girls is 3 : 4.
The number of women to men is 4 : 5.
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 |
1 u |
6 u |
Women |
Men |
Boys |
Girls |
4 |
5 |
3 |
4 |
|
59 x 1 u = 59 u |
37 x 6 u = 247 u |
|
(a)
Change ratio into units.
Boys : Girls : Children
3 : 4 : 3 + 4
3 : 4 : 7
Number of adults = 1 u
(b)
Number of children = 6 u
Fraction of the children that were boys =
37 Number of boys
=
37 x 6 u
= 2
47 u
(c)
Number of adults = 1 u
Fraction of the adults that were men =
59 Number of men
=
59 x 1 u
=
59 u
(d)
Total number of people
= 1 u + 6 u
= 7 u
Answer(s): (a) 1; (b) 2
47; (c)
59; (d) 7