There are 90 people,
of which 20 are women.
There are 60 more children than men.
- How many children are there?
- How many adults are there?
- How many more children than adults are there?
- How many less men than women are there?
(a)
Number of women = 20
Number of men = 1 u
Number of children = 1 u + 60
Total number of people
= 20 + 1 u + 1 u + 60
= 1 u + 1 u + 20 + 60
= 2 u + 80
2 u + 80 = 90
2 u = 90 - 80
2 u = 10
1 u = 10 ÷ 2 = 5
Number of children
= 1 u + 60
= 5 + 60
= 65
(b)
Number of adults
= 20 + 5
= 25
(c)
Number of more children than adults
= 65 - 25
= 40
(d)
Number of less men than women
= 20 - 5
= 15
Answer(s): (a) 65; (b) 25; (c) 40; (d) 15