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 8 minutes, then the area of the park (in sq. m) is:	Select
A) 30720	B) 153600	C) 15360	D) 307200	E) 153700
Perimeter = Distance covered in 8 min. =12000/60x 8	m = 1600 m.   Let length = 3x metres and breadth = 2x metres   Then, 2(3x + 2x) = 1600 or x = 160.   Length = 480 m and Breadth = 320 m.   Area = (480 x 320) m2 = 153600 m2   ANSWER:153600
<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 8 minutes, then the area of the park (in sq. m) is: