Answer: The optimal order quantity would be 95 approximately.
Explanation:
Since we have given that
Mean = 100 cartons
SD= 20 cartons
Cost price per carton = $50.00
Selling price per carton = $70.00
Salvage cost = $20.00
Underage cost = Selling price - cost price
[tex]C_u[/tex] = [tex]70-50=20[/tex]
Overall cost = Cost price - Salvage
[tex]C_o=50-20=30[/tex]
So optimality proportion would be
[tex]\dfrac{C_u}{C_o+C_u}\\\\=\dfrac{20}{20+30}\\\\=\dfrac{20}{50}\\\\=0.4[/tex]
At p = 0.4, so z = -0.253
So, it becomes,
[tex]q=\mu+z\times \sigma\\\\q=100-0.253\times 20\\\\q=100-5.06\\\\q=94.94[/tex]
So, the optimal order quantity would be 95 approximately.