Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 1 : 2.
The ratio of boys to girls is 5 : 6.
The number of men to women is 5 : 4.
Let the number of children be 2 u.
- Number of adults = _____ u
- Number of boys = _____ u
- Number of women = _____ u
- Total number of people = _____ u
Adults |
Children |
1 u |
2 u |
Men |
Women |
Boys |
Girls |
5 |
4 |
5 |
6 |
|
49 x 1 u = 49 u |
511 x 2 u = 1011 u |
|
(a)
Change ratio into units.
Boys : Girls : Children
5 : 6 : 5 + 6
5 : 6 : 11
Number of adults = 1 u
(b)
Number of children = 2 u
Fraction of the children that were boys =
511 Number of boys
=
511 x 2 u
=
1011 u
(c)
Number of adults = 1 u
Fraction of the adults that were women =
49 Number of women
=
49 x 1 u
=
49 u
(d)
Total number of people
= 1 u + 2 u
= 3 u
Answer(s): (a) 1; (b)
1011; (c)
49; (d) 3