Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 8 : 7.
The ratio of boys to girls is 1 : 6.
The number of women to men is 1 : 2.
Let the number of children be 7 u.
- Number of adults = _____ u
- Number of boys = _____ u
- Number of men = _____ u
- Total number of people = _____ u
Adults |
Children |
8 u |
7 u |
Women |
Men |
Boys |
Girls |
1 |
2 |
1 |
6 |
|
23 x 8 u = 513 u |
17 x 7 u = 1 u |
|
(a)
Change ratio into units.
Boys : Girls : Children
1 : 6 : 1 + 6
1 : 6 : 7
Number of adults = 8 u
(b)
Number of children = 7 u
Fraction of the children that were boys =
17 Number of boys
=
17 x 7 u
= 1 u
(c)
Number of adults = 8 u
Fraction of the adults that were men =
23 Number of men
=
23 x 8 u
= 5
13 u
(d)
Total number of people
= 8 u + 7 u
= 15 u
Answer(s): (a) 8; (b) 1; (c) 5
13; (d) 15