A trained covered x km at 40 kmph and another 2x km at 20 kmph. Find the average speed of the train in covering the entire 2x km.	Answers:	A) 16kmph	B) 20kmph	C) 25kmph	D) 30kmph	E) 35kmph
Total time taken = x/40 + 2x/20 hours   = 5x/40 = x/8 hours   16kmphverage speed = 2x/(x/8)   = 16 kmph   16kmphnswer:16kmph
<result>A</result>
A trained covered x km at 40 kmph and another 2x km at 20 kmph. Find the average speed of the train in covering the entire 2x km.