Hi, I posted a q. yesterday, but still did not get to hear from yo guys, but from this question, how to figure days of sales and ending balance in cash when it comes to computing interest income.

Also, why isn't the ending cash balance in year 5, $33,511 m. as per 'B"? why is it $ 77,099 in projected year 5?

my question is from the sample in this link :

https://www.chegg.com/homework-help/questions-and-answers/walmart-design-spreadsheet-prepare-set-financial-statement-forecasts-walmart-year-1-year-5-q18960268

Plz kindly assist sooner as I have this project due soon.

Thank you and I look forward to a clear explanation from you guys.