7. A P 50,000 is invested at a rate of 10% for 10 years with an average annual inflation rate of 5%. How much will be the account at its maturity? 8. A company plans to construct a new building at the end of ten (10) years at an estimated cost of P5,000,000. The company invested equal year-end amount to fund the proposed new building earning 15%. However, at the end of the 6th year it is decided to have a bigger building estimated to cost P8,000,000. What should be the annual deposit for the first 6 years and the last 4 years