Answer and Explanation:
The computation of the cost od merchandised sold for each sale and the inventory balance after each sale is presented in the attachment below;
The perpetual inventory is the system which updated the inventory as on a regular basis 
While on the other hand,  the weighted average cost method is the method in which the average cost is calculated after each every purchase is made
In the calculation below:
1. The weighted average cost of $30.90 come from 
= (Total inventory cost) ÷ (Total quantity)
= ($180,000 + $1,674,000) ÷ (60,000 units)
= $30.90
1. The weighted average cost of $31.60 come from 
= (Total inventory cost) ÷ (Total quantity)
= ($463,500 + $674,100) ÷ (36,000 units)
= $31.60
 
        
             
        
        
        
Identification 
Incorporation document
Memorandum of Incorporation
        
             
        
        
        
Jethro has an absolute advantage in all aspects of camping: he is faster at carrying a backpack, gathering firewood, paddling a canoe, setting up tents, making a meal, and washing up. 
Absolute advantage refers to an individual's capacity to efficiently carry out a task when compared to other individuals or groups. 
- In economics, this broadly refers to the ability and capacity to produce and conduct an economic good or a particular service in a more efficient manner than the competitors. 
- In this case Jethro has an absolute advantage in all aspects of camping. 
- Within the constraints of the economic activity, production is more efficient and higher. 
- Fewer resources are required to produce a particular commodity and/or service that needs higher resources for the competitors. 
- With fewer inputs, the outputs stand maximized in the context of absolute advantage. 
Therefore, Jethro has an absolute advantage in all aspects of camping: he is faster at carrying a backpack, gathering firewood, paddling a canoe, setting up tents, making a meal, and washing up. 
Learn more about absolute advantage here:
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Explanation:
The journal entry are as follows 
On April 20
Sales returns A/c Dr $3,000
        To Account receivable A/c $3,000
(Being the sales returned of goods is recorded)
While recording this given transaction, we debited the sales return account and credited the account receivable account so that the proper posting could be done
 
        
             
        
        
        
The settlement option that provides for ongoing payments for
a period of time is called annuity. The annuity is a type of insurance contract
in which they provide an individual an annual income for a long period of time
such as an example of this is a pension.