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Place A and B are 80 km apart from each other on a highway . A car starts from A and other from B at the same time. If they move in the same direction , they meet in 8 hrs and If they move in opposite direction , they meet in 1 hour 20 min . Find the speeds of the cars..Help !! its urgent..... |
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Answer» LET the SPEED of car at A be x km\hr let the speed of car at b :y km\hr 8x-8y=80 x-y=20............(1) -x-y=80............(2) = -2y =-60 y= 30 substituting the value of y in equation (1) x-y =20 x-30=20 x=20+30=50 |
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