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A Train T1 starts from Ranchi to Patna at 8 am and reaches at 12 noon. A second train T2 starts at 8 am from Patna reaches Ranchi at 1 pm. When did the two train cross each other?1. 10:13 am2. 9:43 am3. 9:47 am4.10:17 am |
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Answer» Correct Answer - Option 1 : 10:13 am Time taken by train T1 to complete its journey = 4 hours Time taken by train T2 to complete its journey = 5 hours Ratio of speeds of trains T1 and T2 = (Time taken by train T2)/(Time taken by train T1) = 5/4 Ratio of distances travelled by trains T1 and T2 = 5/4 Time taken by trains T1 and T2 to cross each other = (5/9) × 4 = 20/9 = 2 hours 13 minutes Thus, both the trains T1 and T2 will cross each other at 10:13 am. |
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