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 40min will be.  Answers:
A) 60kmph  B) 63kmph  C) 57kmph  D) 70kmph  E) 61kmph
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=40/60hr=2/3hr   New speed = 40* 3/2= 
<gadget id="calculator">40* 3/2</gadget>
<output>60</output>
60kmph   60kmphnswer is 60kmph.
<result>A</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 40min will be.