A large field of 700 hectares is divided into two parts. The difference of the areas of the two parts is one–fifth of the average o fthe two areas. What is the area of the smaller part in hectares?  Choose the correct choice from the following
A) 225
B) 280
C) 300
D) 385
E) None
Solution   Let the areas of the two parts be   x and (700 - x)hectares	= [x - (700 - x)]   = 1 / 5 x [x + (700 - x)/ 2]   = 2x - 700= 70   x = 385.   Answer 385
<result>D</result>
A large field of 700 hectares is divided into two parts. The difference of the areas of the two parts is one–fifth of the average o fthe two areas. What is the area of the smaller part in hectares?