a large field of 700700 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 ?
"explanation : average of the two areas = 700 / 2 = 350 one - fifth of the average of the two areas = 350 / 5 = 70 ⇒ difference of the two areas = 70 = 70 let area of the smaller part = x hectares . then , area of the larger part = x + 70 hectares . x + ( x + 70 ) = 700 ⇒ 2 x = 630 ⇒ x = 315 answer : option d"
divide(subtract(700700, multiply(divide(700700, const_2), divide(const_1, add(const_1, const_4)))), const_2)