In: Finance
A saver wants $100,000 after ten years and believes that it is possible to earn an annual rate of 8 percent on invested funds.
a) What amount must be invested each year to accumulate $100,000 if (1) the payments are made at the beginning of each year or (2) they are made at the end of each year?
b) How much must be invested annually if the expected yield is only 5 percent?
Please show step-by-step how to solve within excel
(a)

Annual payment required if payment at beginning of year is $6,391.61 and payment is $6,902.95 if payment is at end of each year. Lesser amount is payable for beginning of year payments because time value of money is higher for payments made at earliest.
(b)
Annual payments when interest rate is 5%:

Excel formulas are shown in the screenshot. Higher annual payments are due to lower interest rate in the second scenario.
Please rate. Comment before negatively rating the answer. Thank you.