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 of the two areas. What is the area of the smaller part in hectares?
A) 315
B) 385
C) 415
D) 485
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Let one part be x and the other 700-x
then, x-(700-x)=(700-x+x)/10
2x-700=70
2x=770
x=385
therefore the other part is= 700-x=315
SO the answer is A)315
then, x-(700-x)=(700-x+x)/10
2x-700=70
2x=770
x=385
therefore the other part is= 700-x=315
SO the answer is A)315
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