There are 890 people,
of which 90 are men.
There are 330 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 = 90
Number of children = 1 u
Number of women = 1 u + 330
Total number of people
= 90 + 1 u + 1 u + 330
= 1 u + 1 u + 90 + 330
= 2 u + 420
2 u + 420 = 890
2 u = 890 - 420
2 u = 470
1 u = 470 ÷ 2 = 235
Number of children
= 1 u
= 235
(b)
Number of adults
= 90 + 1 u + 330
= 90 + 235 + 330
= 655
(c)
Number of less children than adults
= 655 - 235
= 420
(d)
Number of more women than men
= 1 u + 330 - 90
= 235 + 330 - 90
= 475
Answer(s): (a) 235; (b) 655; (c) 420; (d) 475