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a car travels 360 km with uniform speed.If the speed was 6 km/h less the time taken to cover the same distance would be 2 hours more.Find speed and time |
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Answer» Explanation: let the speed of car previously be xkm/hr distance=s×t 360=X×y 360/y=x Now, new speed of car=x-6 km/hr new time taken=y+2 hrs distance=(x+6)(y+2) =xy+2x+6y+12 A/Q x×y=xy+2x+6y+12 0=2x+2y+12 0=2×360/y+6y+12 0=720/y+6y+12 0=720+6y^2+12y/y After that factorize it and then put the value of y in any equation then the value of x will be found |
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