Fill in the blanks in whole numbers or fractions.
The ratio of adults to children is 7 : 6.
The ratio of boys to girls is 1 : 1.
The number of men to women is 5 : 6.
Let the number of children be 6 u.
- Number of adults = _____ u
- Number of boys = _____ u
- Number of women = _____ u
- Total number of people = _____ u
Adults |
Children |
7 u |
6 u |
Men |
Women |
Boys |
Girls |
5 |
6 |
1 |
1 |
|
611 x 7 u = 3911 u |
12 x 6 u = 3 u |
|
(a)
Change ratio into units.
Boys : Girls : Children
1 : 1 : 1 + 1
1 : 1 : 2
Number of adults = 7 u
(b)
Number of children = 6 u
Fraction of the children that were boys =
12 Number of boys
=
12 x 6 u
= 3 u
(c)
Number of adults = 7 u
Fraction of the adults that were women =
611 Number of women
=
611 x 7 u
= 3
911 u
(d)
Total number of people
= 7 u + 6 u
= 13 u
Answer(s): (a) 7; (b) 3; (c) 3
911; (d) 13