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: Select:  A) 153601  B) 153600  C) 153602  D) 153603  E) 240000
Perimeter = Distance covered in 10 min. =(12000/60) x 10m = 2000 m.   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.   Answer: 240000
<result>E</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: