Two trains are moving in opposite directions with speed of 210 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
Select the correct option.
A) 56 B) 48 C) 47 D) 26 E) 24
24xplanation:   Relative speed = 210+90= 
<gadget id="calculator">210+90</gadget>
<output>300</output>
300 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= 2/300 hr = 1/150 hr = 3600/150= 
<gadget id="calculator">3600/150</gadget>
<output>24</output>
24 seconds   Answer: Option 24
<result>E</result>
Two trains are moving in opposite directions with speed of 210 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