A train running at 1/4 of its own speed reached a place in 12 hours. How much time could be saved if the train would have run at its own speed? Options.
A) 9 hrs
B) 10hrs
C) 12hrs
D) 15hrs
E) 6hrs
time taken if run its own speed = 1/4*12= 
<gadget id="calculator">1/4*12</gadget>
<output>3</output>
3 hrs   Time saved= 12 - 3= 
<gadget id="calculator">12 - 3</gadget>
<output>9</output>
9 hrs   9 hrsnswer : 9 hrs
<result>A</result>
A train running at 1/4 of its own speed reached a place in 12 hours. How much time could be saved if the train would have run at its own speed?