the length of a rectangle is twice its breadth . if its length is decreased by 5 cm and breadth is increased by 5 cm , the area of the rectangle is increased by 70 sq . cm . find the length of the rectangle .
"explanation : let breadth = x . then , length = 2 x . then , ( 2 x - 5 ) ( x + 5 ) - 2 x * x = 70 = > 5 x - 25 = 70 = > x = 18 . length of the rectangle = 18 cm . answer : option d"
divide(const_100, const_3)