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 6 : 1.
The number of men to women is 5 : 3.
Let the number of children be 9 u.
- Number of adults = _____ u
- Number of boys = _____ u
- Number of women = _____ u
- Total number of people = _____ u
Adults |
Children |
2 u |
9 u |
Men |
Women |
Boys |
Girls |
5 |
3 |
6 |
1 |
|
38 x 2 u = 34 u |
67 x 9 u = 757 u |
|
(a)
Change ratio into units.
Boys : Girls : Children
6 : 1 : 6 + 1
6 : 1 : 7
Number of adults = 2 u
(b)
Number of children = 9 u
Fraction of the children that were boys =
67 Number of boys
=
67 x 9 u
= 7
57 u
(c)
Number of adults = 2 u
Fraction of the adults that were women =
38 Number of women
=
38 x 2 u
=
34 u
(d)
Total number of people
= 2 u + 9 u
= 11 u
Answer(s): (a) 2; (b) 7
57; (c)
34; (d) 11