Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 6 : 7.
The ratio of boys to girls is 2 : 1.
The number of men to women is 2 : 1.
Let the number of children be 7 u.
- Number of adults = _____ u
- Number of boys = _____ u
- Number of women = _____ u
- Total number of people = _____ u
Adults |
Children |
6 u |
7 u |
Men |
Women |
Boys |
Girls |
2 |
1 |
2 |
1 |
|
13 x 6 u = 2 u |
23 x 7 u = 423 u |
|
(a)
Change ratio into units.
Boys : Girls : Children
2 : 1 : 2 + 1
2 : 1 : 3
Number of adults = 6 u
(b)
Number of children = 7 u
Fraction of the children that were boys =
23 Number of boys
=
23 x 7 u
= 4
23 u
(c)
Number of adults = 6 u
Fraction of the adults that were women =
13 Number of women
=
13 x 6 u
= 2 u
(d)
Total number of people
= 6 u + 7 u
= 13 u
Answer(s): (a) 6; (b) 4
23; (c) 2; (d) 13