How long will a boy take to run round a square field of side 35 meters, if he runs at the rate of 9km/hr?  Choices:	A) 56sec	B) 45sec	C) 1min	D) 32sec	E) 25sec
Speed = 9 km/hr = 9*5/18 = 5/2 m/sec   Distance = 35*4= 
<gadget id="calculator">35*4</gadget>
<output>140</output>
140m   Time taken= 140*2/5= 
<gadget id="calculator">140*2/5</gadget>
<output>56</output>
56sec   56secnswer is 56sec
<result>A</result>
How long will a boy take to run round a square field of side 35 meters, if he runs at the rate of 9km/hr?