The cost(c) of transmitting electric power partly varies as the cube of the distance(d)and partly varies inversely as the temperature(t) in which the power is illuminated. When the distance is 5miles at temperature 15`c the cost is GHc1,010 and when distance is 10miles at temperature 25`c the cost is GHc8,006.Find an equation connecting c,d,t. Find the cost of transmission when distance is 40miles and temperature of 30`c

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