please solve these 3 questions, I have to submit it in 1 hour. Thank You

not necessarily, just solve this one and calculate net credit sales thank you

a) Q. NO. 3 Following are the balance provided by Wilson Traders on December 31st 2019 before closing Opening Balance of Trade debtors S 500 during the year Wilson Traders collected cash from customers $ 3156. Closing balance of A/e receivable $ 700. Mr. Tom who owed $ 785 to Wilson Traders showed a credit balance in his books of account to $ 115 which was not taken into account by Wilson Traders. You, being expert need to locate the amount of Total credit sales for the year of Wilson Traders. Suggest the management of M/s Edward Trading Company that what percentage of the federal Tax will be saved lost, if the Opening Stock of the company is undervalued by $ 40,000 and Federal Tax Rate is 30%. The Net Income before tax of the company is $.4 million) You have completed your Degree in Finance from California University and You were called for a job interview for the Post of Finance Manager. You need to answer the following question asked by the interviewer: What will be Positive or negative impacts of GAAP conservatism principle on Final accounts of the company and discuss the four important aspects which put the impact on the significance of the final accounts. Give at least three real examples of three different businesses in your own hand writing