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+//ques-18.9
+//Comparing theoretical efficiencies of system of engine operating at 1 and 50 atm
+clc
+T1=45;//temperature (in degree celsius)
+//Part (i)
+T2=100;//boiling temperature (in degree celsius)
+n1=(T2-T1)/(T2+273);//efficiency
+//Part (ii)
+T2=265;//boiling temperature (in degree celsius)
+n2=(T2-T1)/(T2+273);//efficiency
+printf("The two theoretical efficiencies required are %.4f and %.4f.",n1,n2);