The breadth of a rectangular hall is two-thirds of its length. If the area of the hall is 2400 sq metres, what is the length in metres? Choose the correct choice from the following options
A) 120  B) 80  C) 60  D) 40  E) none of these

Rationale: let the length of the rectangular hall be ‘ x ’ m , then the breadth of the rectangular hall = 2 x ⁄ 3 m . area of hall = 2 x ⁄ 3 × x = 2 x 2 ⁄ 3 or , 2 x 2 ⁄ 3 = 2400 or x = 60 m answer c
Answer: C