A man travelled from the village to the post office at the rate of 25kmph and walked backed at the rate of 4 kmph. If the whole journey took 5 hours 48 minutes, find the distance of the post office from the village?	Choose the correct answer.
A) 10km B) 50km C) 30km D) 25km E) 20km
Average speed = 2xy/x+y = 2*25*4/25+4 = 200/29km/hr   Distance travelled in 5hr 48mnts = 200/9 * 29/5 = 40km   Distance of the post office from the village = 40/2= 
<gadget id="calculator">40/2</gadget>
<output>20</output>
20km   Answer is 20km
<result>E</result>
A man travelled from the village to the post office at the rate of 25kmph and walked backed at the rate of 4 kmph. If the whole journey took 5 hours 48 minutes, find the distance of the post office from the village?