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diff --git a/182/CH8/EX8.5/8_5.txt b/182/CH8/EX8.5/8_5.txt
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+
+5.Rp=2.980600 M-ohm
+  Cp=0.067996 Micro-F
+  R1=2.026683 M-ohm
+  R4=14.706789 K-ohm 
+\ No newline at end of file
diff --git a/182/CH8/EX8.5/example8_5.sce b/182/CH8/EX8.5/example8_5.sce
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+// to calculate the equivalent parallel capacitance and resistance
+// example 8-5 in page 204
+clc;
+//Given dATA
+R3=10e+3;// resistance R3 in ohm
+f=100;//frequency in hertz
+Cs=0.068e-6; Rs=183.8; // series capacitance in farad and resistance in ohm
+//Calculation
+Xs=1/(2*%pi*f*Cs);// series capacitive reactance in ohm
+Rp=(Rs*Rs+Xs*Xs)/Rs;//equivalent parallel resistance in ohm
+Xp=(Rs*Rs+Xs*Xs)/Xs;//equivalent parallel capacitive reactance in ohm
+Cp=1/(2*%pi*f*Xp);// equivalent capacitance in farad
+R4=C1*R3/Cp;// parallel resistance in ohm
+R1=R3*Rp/R4;// parallel resistance in ohm
+printf("Rp=%.2f M-ohm\nCp=%.3f Micro-F\nR1=%.2f M-ohm\nR4=%.1f K-ohm",Rp/10^6,Cp*10^6,R1/10^6,R4/1000);
+//result
+//Rp=2.98 M-ohm
+//Cp=0.068 Micro-F
+//R1=2.03 M-ohm
+//R4=14.7 K-ohm 
+\ No newline at end of file