A train covers a distance in 50 min, if it runs at a speed of 48kmph on an average. The speed at which the train must run to reduce the time of journey to 10min will be.  Choose the correct choice from the following choices:  A) 60 km/h  B) 55 km/h  C) 240 km/h  D) 70 km/h  E) 65 km/h
Time=50/60 hr=5/6hr   Speed=48mph   distance=S*T=48*5/6= 
<gadget id="calculator">48*5/6</gadget>
<output>40</output>
40km   time=10/60hr=1/6hr   New speed = 40* 6/1= 
<gadget id="calculator">40* 6/1</gadget>
<output>240</output>
240kmph   Answer : 240 km/h
<result>C</result>
A train covers a distance in 50 min, if it runs at a speed of 48kmph on an average. The speed at which the train must run to reduce the time of journey to 10min will be.