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diff --git a/3250/CH2/EX2.5/Ex2_5.sce b/3250/CH2/EX2.5/Ex2_5.sce
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+clc 
+// Given that
+thetaF= 1540 // Temperature of mould face in degree centigrade
+Theta0 = 28 // Initial temperature of mould in Degree centigrade
+L= 272e3 // Latent heat of liquid metal in J/Kg
+Dm = 7850 // Density of liquid metal in Kg/m^3
+c = 1.17e+3 //Specific heat of sand in J/Kg-K
+k = 0.8655 // Conductivity of sand in W/m-K
+D= 1600 // Density of sand in Kg/m^3
+h = 0.1 // Height in m
+b = 10 // Thickness of slab in cm
+r =h/2// V/A in meter
+// Sample Problem 5 on page no. 66
+printf("\n # PROBLEM 2.5 # \n")
+lambda = (thetaF - Theta0)*(D*c)/(Dm*L)
+Beta1 = 2*lambda/sqrt(%pi)
+Alpha = k /(D*c)
+ts1 = r^2 /((Beta1^2)*Alpha)//In sec
+ts1_=ts1/3600 // In hour
+Beta= poly(0,"Beta");
+p=Beta^2 - lambda*(2/sqrt(%pi))*Beta -lambda/3
+Beta2 = roots(p)
+printf(" The value of Beta2 is %f, ",Beta2)
+printf("\n We only take the positive value of Beta2 , \n Hence Beta2=1.75")
+r1 = r/3
+ts2 = (r1^2)/((1.75^2)*Alpha) // in sec
+ts2_=ts2/3600//in Hour
+printf("\n\n Solidification time for slab-shaped casting = %f hr,\n Solidification time for sphere = %f hr", ts1_,ts2_)
diff --git a/3250/CH2/EX2.5/Ex2_5.txt b/3250/CH2/EX2.5/Ex2_5.txt
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+ 
+ # PROBLEM 2.5 # 
+ The value of Beta2 is 1.748516,  The value of Beta2 is -0.252713, 
+ We only take the positive value of Beta2 , 
+ Hence Beta2=1.75
+
+ Solidification time for slab-shaped casting = 0.671318 hr,
+ Solidification time for sphere = 0.054495 hr 
+\ No newline at end of file