Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 2 : 5.
The ratio of girls to boys is 2 : 1.
The number of men to women is 2 : 3.
Let the number of children be 5 u.
- Number of adults = _____ u
- Number of girls = _____ u
- Number of women = _____ u
- Total number of people = _____ u
Adults |
Children |
2 u |
5 u |
Men |
Women |
Girls |
Boys |
2 |
3 |
2 |
1 |
|
35 x 2 u = 115 u |
23 x 5 u = 313 u |
|
(a)
Change ratio into units.
Girls : Boys : Children
2 : 1 : 2 + 1
2 : 1 : 3
Number of adults = 2 u
(b)
Number of children = 5 u
Fraction of the children that were girls =
23 Number of girls
=
23 x 5 u
= 3
13 u
(c)
Number of adults = 2 u
Fraction of the adults that were women =
35 Number of women
=
35 x 2 u
= 1
15 u
(d)
Total number of people
= 2 u + 5 u
= 7 u
Answer(s): (a) 2; (b) 3
13; (c) 1
15; (d) 7