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An electric cable cost Rs 200.If the cable was 5m longer and each metre of cable costs Rs 2 less,the cost of cable would have remained unchanged.Represent the above situation in the form of a quadratic equation
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let the length of cable is X cm
cost of cable = Rs 200/x per mt
(x+5)* [(200/x)-2] = 200
solve get : X square - 5 x -500 = 0
get answer x = 68.2548 m
cost of cable = Rs 200/x per mt
(x+5)* [(200/x)-2] = 200
solve get : X square - 5 x -500 = 0
get answer x = 68.2548 m
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