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The Ratio Between The Speed Of Two Trains Is 7: 8.if The Second Train Runs 400km In 5 Hours. The Speed Of The First Train Is? |
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Answer» Let the SPEED of the first train be 7x km/hr Then the speed of the SECOND train is 8x km/hr But speed of the second train = 400/5 km/hr = 80km/hr => X=10 Hence the speed of first train is (7 x 10)km/hr = 70km/hr. Let the speed of the first train be 7x km/hr Then the speed of the second train is 8x km/hr But speed of the second train = 400/5 km/hr = 80km/hr => 8x =80 => X=10 Hence the speed of first train is (7 x 10)km/hr = 70km/hr. |
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