Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 4 : 11.
The ratio of boys to girls is 1 : 2.
The number of men to women is 5 : 6.
Let the number of children be 11 u.
- Number of adults = _____ u
- Number of boys = _____ u
- Number of women = _____ u
- Total number of people = _____ u
Adults |
Children |
4 u |
11 u |
Men |
Women |
Boys |
Girls |
5 |
6 |
1 |
2 |
|
611 x 4 u = 2211 u |
13 x 11 u = 323 u |
|
(a)
Change ratio into units.
Boys : Girls : Children
1 : 2 : 1 + 2
1 : 2 : 3
Number of adults = 4 u
(b)
Number of children = 11 u
Fraction of the children that were boys =
13 Number of boys
=
13 x 11 u
= 3
23 u
(c)
Number of adults = 4 u
Fraction of the adults that were women =
611 Number of women
=
611 x 4 u
= 2
211 u
(d)
Total number of people
= 4 u + 11 u
= 15 u
Answer(s): (a) 4; (b) 3
23; (c) 2
211; (d) 15