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Two Stations A And B Are 110 Km Apart On A Straight Line. One Train Starts From A At 7 A.m. And Travels Towards B At 20 Kmph. Another Train Starts From B At 8 A.m. And Travels Towards A At A Speed Of 25 Kmph. At What Time Will They Meet? |
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Answer» Let they meet x hours after 7 a.m. DISTANCE covered by A in x hours = 20x km. Distance covered by B in (x - 1) hours = 25(x - 1) km. So TOTAL Distance => 20x + 25(x - 1) = 110 => 45x - 25 = 110 => 45x = 135 => x = 3. As They meet x HRS after 7 a.m. so they meet at 10 a.m. Let they meet x hours after 7 a.m. Distance covered by A in x hours = 20x km. Distance covered by B in (x - 1) hours = 25(x - 1) km. So Total Distance => 20x + 25(x - 1) = 110 => 45x - 25 = 110 => 45x = 135 => x = 3. As They meet x hrs after 7 a.m. so they meet at 10 a.m. |
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