Your parents plan to retire after 5 years. They would like yearly income of OMR 30,000 beginning 6 years from now and continuing forever. They have OMR 40,000 saved so far. How much must they save at the end of each of the next 5 in order to achieve their goal? The interest rate is 8%

b) Solve Problem 6 above assuming your parents will have a retirement period of 30 years.