The ratio between the length and the breadth of a rectangular park is 3 : 2. If a man cycling along the boundary of the park at the speed of 12 km/hr completes one round in 10 minutes, then the area of the park (in sq. m) is  Choose the correct choice.
A) 153200 B) 240000 C) 153600 D) 154000 E) 154200
Perimeter = Distance covered in 10 min. = 12000 x 10 m = 2000 m.   60   Let length = 3x metres and breadth = 2x metres.   Then, 2(3x + 2x) = 2000 or x = 200.   Length = 600 m and Breadth = 400 m.   Area = (600 x 400) m2 = 240000 m2.   240000
<result>B</result>
The ratio between the length and the breadth of a rectangular park is 3 : 2. If a man cycling along the boundary of the park at the speed of 12 km/hr completes one round in 10 minutes, then the area of the park (in sq. m) is