There are 980 people,
of which 150 are men.
There are 710 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 = 150
Number of children = 1 u
Number of women = 1 u + 710
Total number of people
= 150 + 1 u + 1 u + 710
= 1 u + 1 u + 150 + 710
= 2 u + 860
2 u + 860 = 980
2 u = 980 - 860
2 u = 120
1 u = 120 ÷ 2 = 60
Number of children
= 1 u
= 60
(b)
Number of adults
= 150 + 1 u + 710
= 150 + 60 + 710
= 920
(c)
Number of less children than adults
= 920 - 60
= 860
(d)
Number of more women than men
= 1 u + 710 - 150
= 60 + 710 - 150
= 620
Answer(s): (a) 60; (b) 920; (c) 860; (d) 620