A train 108 m long moving at a speed of 50 km/hr crosses a train 112…

Question

A train 108 m long moving at a speed of 50 km/hr crosses a train 112 m long coming from opposite direction in 6 seconds. The speed of the second train is:

Accepted Answer

Option D. 82 km/hr. Answer & Solution Answer: Option D Solution: & Let\, the\, speed\, of\, the\, second\, train\, be\,x\, km/hr. & Relative\, speed\, & = \, ( x + 50 )\, km/hr & = [ ( x + 50 ) × 518 ]\, m/sec & = 250 + 5x18 \, m/sec & Distance\, covered & = ( 108 + 112 ) = 220\,m & 220 250 + 5x18…