Answer:
We require 9.67% return per year to achieve 300,000 in the future
Explanation:
we need to solve for the rate at which a current value of 57,000 dollars will generate 300,000 dollars after 18 years:

Principal 57,000.00
time 18.00
Amount 300,000
![r=\sqrt[18]{300,000/57,000} -1](https://tex.z-dn.net/?f=r%3D%5Csqrt%5B18%5D%7B300%2C000%2F57%2C000%7D%20-1)
r = 0.096653034
Answer:
The optimum production quantity is 72 wheel bearings per batch.
Explanation:
Wheel Rite can produce 480 wheel bearings per day.
Setup cost are $39 per batch.
Holding costs are $0.70 per unit per year.
The optimum batch size can be calculated as the one that minimizes the cost. This can be calculated with the Economic Order Quantity formula:

In this case, the units are:
D: daily demand (52 u.)
S: Setup cost per order ($39)
H: holding cost per unit per year ($0.70)
Then, we have:

The optimum production quantity is 72 per batch.
Ur at a 50:50 chance of getting right. Just guess :p
Answer
The answer and procedures of the exercise are attached in the following archives.
Step-by-step explanation:
Gross profit = Sales - Cost of goods sold
= (440 x 90 + 220 x 80 + 264 x 50) - (440 x 56.7 + 220 x 50.4 + 264 x 31.5)
= (39,600 + 17,600 + 13,200) - (24,948 + 11,088 + 8,316)
= 70,400 - 44,352
= $26,048
Ending inventory schedule attached in the excel archive
You will find the procedures, formulas or necessary explanations in the archive attached below. If you have any question ask and I will aclare your doubts kindly.