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diff --git a/2465/CH5/EX5.10/Example_10.sce b/2465/CH5/EX5.10/Example_10.sce
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+//Chapter-5,Example 10,Page 125
+clc();
+close();
+
+T1=50   //time in sec
+
+T2 = 25   //time in sec
+
+a1=0.5   //initial concentration
+
+a2= 1 
+
+//  (T1/T2) = (a2/a1)^(n-1)
+//therefore  (50/25) =(1/0.5)^(n-1)
+//           2=2^(n-1)
+//           n=2
+//hence its 2nd order 
+
+t_half= T1
+
+k=1/(a1*t_half)
+
+//assume y= a-x
+
+y=0.2*a1     //remaining concentration
+
+t=(a1-y)/(a1*k*(y))
+
+printf('the time taken is %.f sec ',t)