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+clc
+// Given that
+Bp = 110 // Brake power in kW
+n_m = 0.8 // Mechanical efficiency of the engine
+m_f = 50 // Fuel required for engine in kg/h
+r_f = 5 // Reduced engine friction in kW
+printf("\n Example 20.7\n")
+Ip = Bp/n_m
+Fp = Ip-Bp
+Fp_n = Fp-r_f
+Ip_new = Bp + Fp_n
+m_f_new = Ip_new * m_f/ Ip
+s_f = m_f- m_f_new
+printf("\nSaving in fuel = %f kg/h",s_f)
+
+
+