Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 7 : 10.
The ratio of boys to girls is 5 : 3.
The number of men to women is 3 : 5.
Let the number of children be 10 u.
- Number of adults = _____ u
- Number of boys = _____ u
- Number of women = _____ u
- Total number of people = _____ u
Adults |
Children |
7 u |
10 u |
Men |
Women |
Boys |
Girls |
3 |
5 |
5 |
3 |
|
58 x 7 u = 438 u |
58 x 10 u = 614 u |
|
(a)
Change ratio into units.
Boys : Girls : Children
5 : 3 : 5 + 3
5 : 3 : 8
Number of adults = 7 u
(b)
Number of children = 10 u
Fraction of the children that were boys =
58 Number of boys
=
58 x 10 u
= 6
14 u
(c)
Number of adults = 7 u
Fraction of the adults that were women =
58 Number of women
=
58 x 7 u
= 4
38 u
(d)
Total number of people
= 7 u + 10 u
= 17 u
Answer(s): (a) 7; (b) 6
14; (c) 4
38; (d) 17