There are 540 people,
of which 20 are men.
There are 270 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 = 20
Number of children = 1 u
Number of women = 1 u + 270
Total number of people
= 20 + 1 u + 1 u + 270
= 1 u + 1 u + 20 + 270
= 2 u + 290
2 u + 290 = 540
2 u = 540 - 290
2 u = 250
1 u = 250 ÷ 2 = 125
Number of children
= 1 u
= 125
(b)
Number of adults
= 20 + 1 u + 270
= 20 + 125 + 270
= 415
(c)
Number of less children than adults
= 415 - 125
= 290
(d)
Number of more women than men
= 1 u + 270 - 20
= 125 + 270 - 20
= 375
Answer(s): (a) 125; (b) 415; (c) 290; (d) 375