Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 5 : 3.
The ratio of boys to girls is 6 : 1.
The number of men to women is 1 : 4.
Let the number of children be 3 u.
- Number of adults = _____ u
- Number of boys = _____ u
- Number of women = _____ u
- Total number of people = _____ u
Adults |
Children |
5 u |
3 u |
Men |
Women |
Boys |
Girls |
1 |
4 |
6 |
1 |
|
45 x 5 u = 4 u |
67 x 3 u = 247 u |
|
(a)
Change ratio into units.
Boys : Girls : Children
6 : 1 : 6 + 1
6 : 1 : 7
Number of adults = 5 u
(b)
Number of children = 3 u
Fraction of the children that were boys =
67 Number of boys
=
67 x 3 u
= 2
47 u
(c)
Number of adults = 5 u
Fraction of the adults that were women =
45 Number of women
=
45 x 5 u
= 4 u
(d)
Total number of people
= 5 u + 3 u
= 8 u
Answer(s): (a) 5; (b) 2
47; (c) 4; (d) 8