Two trains are moving in opposite directions with speed of 110 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
Pick:
A) 26
B) 48
C) 47
D) 36
E) 25
Explanation:   Relative speed = 110+90= 
<gadget id="calculator">110+90</gadget>
<output>200</output>
200 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= 2/200 hr = 1/100 hr = 3600/100= 
<gadget id="calculator">3600/100</gadget>
<output>36</output>
36 seconds   Answer: Option 36
<result>D</result>
Two trains are moving in opposite directions with speed of 110 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