Let the speed of train A be S1 and the speed of train B be S2. And length of train A be L1 and the length of train B be L2. According to the question, (S1 + S2) = (L1 + LB)/20 And, (S1 - S2) = (L1 + LB)/30 Here, the length of both the train is equal. So, (S1 + S2) × 20 = (S1 - S2) × 30 => 20 S1 + 20 S2 = 30 S1 – 30 S2 => 10 S1 = 50 S2 => S1/S2 = 50/10 = 5/1 Speed of slower train = n% of faster train => n% = (1/5) × 100 = 20% Therefore, (n × 2) = 20 × 2 = 40
He knew many of the employees of the company by name, and had pleasant, gentle and kind-hearted dealings with a large number of them above a long period.
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Although he had prepared well (1)/ for the interview, (2)/ he could not answered (3)/ several of the technical questions (4)
The trek is difficult (A) / but it is far worth (B) / the endeavor. (C) / No Error (D)
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