To asphalt 1km road, 30 men spent 12 days working 8 hours per day. How many days, 20 men will spend to asphalt a road of 2km working 9 hours a day?  Choose the correct choice from the following answers.
A) 34	B) 36	C) 32	D) 40	E) 44
Man-hours required to asphalt 1 km road=30*12*8= 
<gadget id="calculator">30*12*8</gadget>
<output>2_880</output>
2880   Man-hours required to asphalt 2 km road=2880*2= 
<gadget id="calculator">2880*2</gadget>
<output>5_760</output>
5760   Man-hours available per day=20*9= 
<gadget id="calculator">20*9</gadget>
<output>180</output>
180   Therefore number of days=5760/180= 
<gadget id="calculator">5760/180</gadget>
<output>32</output>
32 days   Ans=32
<result>C</result>
To asphalt 1km road, 30 men spent 12 days working 8 hours per day. How many days, 20 men will spend to asphalt a road of 2km working 9 hours a day?