There are 730 people,
of which 150 are women.
There are 300 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 = 150
Number of children = 1 u
Number of men = 1 u + 300
Total number of people
= 150 + 1 u + 1 u + 300
= 1 u + 1 u + 150 + 300
= 2 u + 450
2 u + 450 = 730
2 u = 730 - 450
2 u = 280
1 u = 280 ÷ 2 = 140
Number of children
= 1 u
= 140
(b)
Number of adults
= 150 + 1 u + 300
= 150 + 140 + 300
= 590
(c)
Number of less children than adults
= 590 - 140
= 450
(d)
Number of more men than women
= 1 u + 300 - 150
= 140 + 300 - 150
= 290
Answer(s): (a) 140; (b) 590; (c) 450; (d) 290