complete solutions

1. XYZ Construction Firm plans to borrow P4,000,000 from a bank for One year at 9% interest for a new dump truck. Determine the interest and total amount due after one year. 2. From the borrower's perspective, what is the interest rate charged on a loan of P100,000 that requires four annual payments of P27,000 using annual compounding? 3. A micro-brewery is considering the installation of a newly designed boiler system that burns the dried, spent malt and barley grains from the brewing process. The boiler will produce process steam that powers most the brewery's energy operations, saving P18,900,000 per year over the boiler's expected life of 10 years. If the interest rate is 12% per year, how much money can the brewery afford to invest in the new boiler system. 4. If P50,000 is deposited in a bank saving account, how much would be in the account 4 years hence if the bank paid 6% interest compounded annually