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 --

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 -- Correct Answer 82 km/hr

ধরি, দ্বিতীয় ট্রেনটির গতি x km/hr 6/60× 60 = (108/1000) + (112 /1000) / x + 50 1/600 = ( 220/1000) / x + 50 1/600 = 22/100( x + 50) 1/6 = 22/ x + 50 x + 50 = 6 × 22 x = 132 - 50 x = 82
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