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A train travelling at a uniform speed passes by a platform 220m long in 30 seconds and another platform 325m long in 39 seconds. find the lenth of the train. please answer fast it's urgent |
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Answer» ength of the train = 41.9 mExplanationGivenA train travels accross a PLATFORM of DISTANCE 220 m in 30 secIt crosses a platform of length 325 m in 39 secTo FindLength of the trainSolutionAssume the length of the train as x[Using the formula for speed, thet is Speed = Distance/TimeCase 1➝ Speed = {x+Distance}/Time➝ Speed = {x+220}/30 -eq(1)Case 2➝ Speed = {x+Distance}/Time➝ Speed = {x+325}/39 -eq(2)EQUATING eq(1) & eq(2)➝ {x+220}/30 = {x+325}/39➝ 39(x+220) = 30(x+325)➝ 39x+8580 = 30x+9750➝ 39x-30x = 9750-8580➝ 9x = 1170➝ x = 130 Therefore the length of the train is 130 m |
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