There are 740 people,
of which 130 are women.
There are 490 less adults than men.
- How many children are there?
- How many adults are there?
- How many less children than adults are there?
- How many more men than women are there?
(a)
Number of women = 130
Number of children = 1 u
Number of men = 1 u + 490
Total number of people
= 130 + 1 u + 1 u + 490
= 1 u + 1 u + 130 + 490
= 2 u + 620
2 u + 620 = 740
2 u = 740 - 620
2 u = 120
1 u = 120 ÷ 2 = 60
Number of children
= 1 u
= 60
(b)
Number of adults
= 130 + 1 u + 490
= 130 + 60 + 490
= 680
(c)
Number of less children than adults
= 680 - 60
= 620
(d)
Number of more men than women
= 1 u + 490 - 130
= 60 + 490 - 130
= 420
Answer(s): (a) 60; (b) 680; (c) 620; (d) 420