Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 3 : 8.
The ratio of girls to boys is 3 : 4.
The number of men to women is 4 : 1.
Let the number of children be 8 u.
- Number of adults = _____ u
- Number of girls = _____ u
- Number of women = _____ u
- Total number of people = _____ u
Adults |
Children |
3 u |
8 u |
Men |
Women |
Girls |
Boys |
4 |
1 |
3 |
4 |
|
15 x 3 u = 35 u |
37 x 8 u = 337 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
3 : 4 : 3 + 4
3 : 4 : 7
Number of adults = 3 u
(b)
Number of children = 8 u
Fraction of the children that were girls =
37 Number of girls
=
37 x 8 u
= 3
37 u
(c)
Number of adults = 3 u
Fraction of the adults that were women =
15 Number of women
=
15 x 3 u
=
35 u
(d)
Total number of people
= 3 u + 8 u
= 11 u
Answer(s): (a) 3; (b) 3
37; (c)
35; (d) 11