Answer and Explanation:
1. Total current assets 
As we know that
Current ratio = Current assets ÷ current liabilities 
Current liabilities  is 
= Accounts payable + Accrued interest + Salaries payable 
= $50,000 + $1,000 + $22,000 
= $73,000
And, 
Current ratio = 1.5:1
So, 
Total current assets is 
= 1.5 × $73,000 
= $109,500
b.  Short term investment is 
Short term investment = Total current assets - Cash and cash equivalents - Accounts receivables - Inventories
= $109,500 - ($6,100 + $31,000 + $71,000) 
= $1,400
c. Now retained earning is 
Total assets 
= Total current assets + Property, plant and equipment 
= $109,500 + $175,000 
= $284,500
Total liabilities is 
= Current liabilities + Notes payable 
= $73,000 + $41,000 
= $114,000
Retained earnings is 
= Total assets - Total liabilities  - Paid in capital
= $284,500 - $114,000 - $155,000 
= $15,500