Answer:
24.7215
Explanation:
Given;
Discount = 50%
Regular price, p = $8
cost of cake, c = $5
salvage value, s = 50% of $8 = $4
Mean = 20
Standard deviation, σ = 7
Now,
Underage cost, Cu = p - c
= $8 - $5
= $3
Overage cost, Co = c - s
= $5 - $4
= $1
P ≤ [tex]\frac{C_{u}}{(C_{u}+C_{o})}[/tex]
P ≤ [tex]\frac{3}{(3+1)}[/tex]
P ≤ 0.75
The Z value for the probability 0.75 is 0.6745
The optimal stocking level = Mean + ( z × σ )
= 20 + 0.6745 × 7
= 24.7215