Watson Sports Company (WSC) invested 20,000 in a volleyball-making machine that provided a return of 11% per annum. Additional investments were made: 14,000 a year later, and 2,000 less every year until the 7^th year after the first investment. It withdrew 5,000 at year 2, 5,500 at year 3, and 10% more than the preceding year every year until the 7^th year after the first investment.

How much is the present value of all MLSCs investments throughout the 7 years? What are the uniform gradient amount (G, in pesos) and period (N, in years) if the above problem is to be computed using the gradient formula? What is the value at the end of the 7^th year of all of MLSCs withdrawals throughout the 7 years? What is the values of g and the period of MLSCs withdrawals, assuming the gradient formula is used to solve the above problem? What is MLSCs accumulated net investment balance by the end of year 6?