There are 930 people,
of which 270 are women.
There are 570 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 = 270
Number of children = 1 u
Number of men = 1 u + 570
Total number of people
= 270 + 1 u + 1 u + 570
= 1 u + 1 u + 270 + 570
= 2 u + 840
2 u + 840 = 930
2 u = 930 - 840
2 u = 90
1 u = 90 ÷ 2 = 45
Number of children
= 1 u
= 45
(b)
Number of adults
= 270 + 1 u + 570
= 270 + 45 + 570
= 885
(c)
Number of less children than adults
= 885 - 45
= 840
(d)
Number of more men than women
= 1 u + 570 - 270
= 45 + 570 - 270
= 345
Answer(s): (a) 45; (b) 885; (c) 840; (d) 345