An underground cable 12 km long extends east to west and consists of two parallel wires, each of which has resistance 10 Q/km. Anelectrical short develops at distance x from the west end when a conducting path of resistance R connects the wires (see the figure).The resistance of the wires and the short is 84 Q when measured from the east end and 200 Q when measured from the west end.What are (a) x and (b) R?|ConductingpathWestEast(a) NumberiUnits(b) NumberiUnits

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