Two trains are moving in opposite directions with speed of 70 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 Choose the correct choice from the following answers:
A) 56 B) 45 C) 47 D) 26 E) 25
Explanation:   Relative speed = 70+90= 
<gadget id="calculator">70+90</gadget>
<output>160</output>
160 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= 2/160 hr = 1/80 hr = 3600/80 seconds = = 45 seconds   Answer: Option 45
<result>B</result>
Two trains are moving in opposite directions with speed of 70 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