Two trains are moving in opposite directions at 60 km/hr and 90 km/hr. Their lengths are 1.25 km and 1.00 km respectively. The time taken by the slower train to cross the faster train in seconds is?  Answers
A) 48	B) 9	C) 7	D) 67	E) 54
:   Relative speed = 60 + 90= 
<gadget id="calculator">60 + 90</gadget>
<output>150</output>
150 km/hr.= 150 * 5/18 = 125/3 m/sec.   Distance covered = 1.25 + 1.0= 
<gadget id="calculator">1.25 + 1.0</gadget>
<output>2.25</output>
2.25 km= 2250 m.   Required time = 2250 * 3/125= 
<gadget id="calculator">2250 * 3/125</gadget>
<output>54</output>
54 sec.   Answer: 54
<result>E</result>
Two trains are moving in opposite directions at 60 km/hr and 90 km/hr. Their lengths are 1.25 km and 1.00 km respectively. The time taken by the slower train to cross the faster train in seconds is?