Leigh Delight Candy, Inc. is choosing between two bonds in which to invest their cash. One is being offered from Hershey's and will mature in $10$ years and pay $$30$ each quarter. The other alternative is a Mars' bond that will mature in $20$ years and pay $$30$ each quarter. What would be the present value of each bond if the discount rate is $10\%$ compounded quarterly, and each bond pays $$1,000$ at maturity?

Can you please show me without using excel.