A train met with an accident 90km away from station A. It completed the remaining journey at 5/6th of the original speed and reached station B 1hr 12mins late. Had the accident taken place 60km further, it would have been only 1hr late. what was the original speed of the train? Choose one:
A) 60 km/hr
B) 55 km/hr
C) 65 km/hr
D) 90 km/hr
E) 48 km/hr
let the original speed be 6x. A/q, traveling 90 km at 5/6th of original speed costs him 12 minutes etc   90/5x =90/6x +12/90 -&gt; x =10 , 9x= 90.   Ans 90 km/hr
<result>D</result>
A train met with an accident 90km away from station A. It completed the remaining journey at 5/6th of the original speed and reached station B 1hr 12mins late. Had the accident taken place 60km further, it would have been only 1hr late. what was the original speed of the train?