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diff --git a/3850/CH28/EX28.5/Ex28_5.sce b/3850/CH28/EX28.5/Ex28_5.sce
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+
+//To Calculate the Amount of Time for Cooling
+
+//Example 28.5
+
+clear;
+
+clc;
+
+T1=70;//Initial Temperature in degree Celsius in First Case
+
+T2=60;//Final Temperature in degree Celsius in First Case
+
+Tav=(T1+T2)/2;//Average Temperature in First Case
+
+Ts=30;//Temperature of Surrounding in degree Celsius
+
+Tdif1=Tav-Ts;//Average Temperature Difference from Surrounding in first case
+
+t=5;//Time taken for cooling from 70 deg Celsius to 60 deg Celsius
+
+Rt=(T1-T2)/t;//Rate of fall of Temperature
+
+bA=Rt/Tdif1;//Product of Wein Constannt and Area
+
+T3=60;//Initial Temperature in degree Celsius in second case
+
+T4=50;//Final Temperature in degree Celsius in second case
+
+Tdif2=T3-T4;//Change in Temperature in second case
+
+Tav1=(T3+T4)/2;//Average Temperature in second case
+
+Tdif3=Tav1-Ts;//Average Temperature Difference from Surrounding in second case
+
+t1=Tdif2/(bA*Tdif3);//Time taken by the liquid to cool
+
+printf("Time taken by the liquid to cool=%d min",t1);
diff --git a/3850/CH28/EX28.5/Ex28_5.txt b/3850/CH28/EX28.5/Ex28_5.txt
new file mode 100644
index 000000000..a97f9f8a4
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+
+ Time taken by the liquid to cool=7 min
+\ No newline at end of file