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:
A. 15360 B. 153600
C. 30720 D. 307200

Question

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:
A. 	15360	B. 	153600
C. 	30720	D. 	307200

goformit100 · Answer

@.Sam.

goformit100 · Answer

HELP sir

goformit100 · Answer

@kropot72

goformit100 · Answer

@LoveYou*69

mayankdevnani · Answer

let the length be 3x and breadth be 2x.    ok   @goformit100

mayankdevnani · Answer

so its perimeter would be  $$=2(3x+2x)=10x$$

mayankdevnani · Answer

@kropot72     this answer would not match with the options!!!!

mayankdevnani · Answer

so its distance = $$\frac{12000}{60} \times 8=1600$$

mayankdevnani · Answer

so $$10x=1600$$
$$x=160$$
$$area=480 \times 320 =153600$$

mayankdevnani · Answer

so correct answer is option b   
@goformit100

mayankdevnani · Answer

m don't satisfy with   @kropot72    answer!!!!!

goformit100 · Answer

Thaks

mayankdevnani · Answer

welcome!!!!