There are 880 people,
of which 70 are men.
There are 500 less adults than women.
- How many children are there?
- How many adults are there?
- How many less children than adults are there?
- How many more women than men are there?
(a)
Number of men = 70
Number of children = 1 u
Number of women = 1 u + 500
Total number of people
= 70 + 1 u + 1 u + 500
= 1 u + 1 u + 70 + 500
= 2 u + 570
2 u + 570 = 880
2 u = 880 - 570
2 u = 310
1 u = 310 ÷ 2 = 155
Number of children
= 1 u
= 155
(b)
Number of adults
= 70 + 1 u + 500
= 70 + 155 + 500
= 725
(c)
Number of less children than adults
= 725 - 155
= 570
(d)
Number of more women than men
= 1 u + 500 - 70
= 155 + 500 - 70
= 585
Answer(s): (a) 155; (b) 725; (c) 570; (d) 585