<PRE><B>Question 1120637</B>
Let m = men

Let w = women

Let c = children

m = 20 + x

w = x

c = 20 + (20 + x) + x


20 + x + x + 20 + 20 + 2x = 340

4x + 60 = 340

4x = 340 - 60

4x = 280

x = 280/4

x = 70

There are 70 women.

We know that men = 20 + x.

There are 20 + 70 or 90 men.

We know there are more children than adults.

c = 20 + (20 + 70) + 70

c = 20 + 90 + 70

c = 90 + 90

c = 180

There are 180 children. 

Understand?</PRE>