On 1/4/2020, one of the clients had a deposit with Al-RajhiBank amounting to 8,000 riyals, with an annual return of 8%, and the return is added at the end of each year. Note that there is a debt owed by the customer in the amount of 15992 to the same bank?

Required: What is the time period required to keep the deposit in the bank until the amount necessary to repay the debt is paid?

(Second Branch) 7 marks:

What is the normal annual payment that must be deposited in the bank to obtain at the end of 3 years the amount of 12,000 riyals if the payment is quarterly and paid at the end of each quarter of the year, noting that the annual rate of return is 8?

(Section Three) 6 marks:

Khaled established a savings account to cover his son's university education by making annual deposits of 6000 riyals at the beginning of each year for a period of 6 years in a savings account that charges him an annual return of 8%. And at the end of the sixth year, the account balance was transferred to another bank that pays 10% as an annual return, and Abdul Qadircontinued to make annual deposits of 6000 riyals at the end of each year from seven to ten. What was the account balance at the end of the tenth year?