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+//Variable declaration:
+T1 = 1500.0+460.0                   //Absolute temperature 1 (°R)
+T2 = 1000.0+460.0                   //Absolute temperature 2 (°R)
+
+//Calculation:
+X = T1**4/T2**4                     //Ratio of quantity of heat transferred
+x = 100*(T1**4-T2**4)/T2**4         //Percentage increase in heat transfer (%)
+
+//Result:
+printf("The ratio of the quantity/rate of heat transferred is : %.2f .",X)
+printf("The percentage increase in heat transfer is : %.0f %%",x)