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+// Variable Declaration
+w = 0.8 //Coal to be burnt for every kWh of electric energy(kg)
+C = 5000 //Calorific value of coal(kilo-calories/kg)
+
+// Calculation Section
+heat_energy = C*w/860 //Heat energy of combustion of given coal(kWh)
+efficiency = 1/heat_energy //Overall efficiency
+
+
+// Result Section
+printf('Overall efficiency of the plant = %.3f' ,efficiency)