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diff --git a/1553/CH19/EX19.4/19Ex4.sce b/1553/CH19/EX19.4/19Ex4.sce
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+++ b/1553/CH19/EX19.4/19Ex4.sce
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+//chapter 19 Ex 4
+
+clc;
+clear;
+close;
+
+sCycle=12; sBoat=10; sRiver=4;
+sAvgCyclist=12;  //since the speed of cyclist is same in both directions
+sDown=sBoat+sRiver;
+sUp=sBoat-sRiver;
+sAvgSailor=(2*sDown*sUp)/(sDown+sUp);
+if(sAvgCyclist>sAvgSailor)
+    {printf("The cyclist will return to place A first");}
+    
+else{printf("The sailor will return to place A first");}
+    end