Two trains are moving in opposite directions with speed of 60 km/hr and 90 km/hr respectively. Their lengths are 1.10 km and 0.9 km respectively. the slower train cross the faster train in --- seconds Options.
A) 40	B) 42	C) 44	D) 46	E) 48
Relative speed = 60+90= 
<gadget id="calculator">60+90</gadget>
<output>150</output>
150 km/hr (Since both trains are moving in opposite directions)   Total distance= 1.1+.9= 
<gadget id="calculator">1.1+.9</gadget>
<output>2</output>
2km   Time= 2/150 hr = 1//75 hr = 3600/75 seconds = 1200/25 = 240/5= 
<gadget id="calculator">240/5</gadget>
<output>48</output>
48 seconds   Answer is 48.
<result>E</result>
Two trains are moving in opposite directions with speed of 60 km/hr and 90 km/hr respectively. Their lengths are 1.10 km and 0.9 km respectively. the slower train cross the faster train in --- seconds