pls this question has 4 parts. it ask for the present worth of project B1 and B2

then the second part is afther ten yeas the present values of both projects again

\begin{tabular}{|rrrrr} & \multicolumn{1}{rr}{ B1 } & & \multicolumn{2}{c}{ B2 } \\ n & Cash Flow & Salvage Value & Cash Flow, & Salvage Value \\ \hline 0 & $29,000 & & $27,000 & \\ 1 & 2,100 & 14,500 & 1,600 & 10,000 \\ 2 & 2,100 & 13,000 & 1,600 & 7,500 \\ 3 & 2,100 & 11,000 & 1,600 & 4,500 \\ 4 & 2,100 & 9,000 & & \\ 5 & 2,100 & 8,500 & & \\ \hline \end{tabular} (a) Assuming an infinite planning horizon, which project is a better choice at MARR =12% ? Use 15 years as the common analysis period. The present worth for project B1 is $ thousand. (Round to one decimal place.) \begin{tabular}{|rrrrr} & \multicolumn{1}{rr}{ B1 } & & \multicolumn{2}{c}{ B2 } \\ n & Cash Flow & Salvage Value & Cash Flow, & Salvage Value \\ \hline 0 & $29,000 & & $27,000 & \\ 1 & 2,100 & 14,500 & 1,600 & 10,000 \\ 2 & 2,100 & 13,000 & 1,600 & 7,500 \\ 3 & 2,100 & 11,000 & 1,600 & 4,500 \\ 4 & 2,100 & 9,000 & & \\ 5 & 2,100 & 8,500 & & \\ \hline \end{tabular} (a) Assuming an infinite planning horizon, which project is a better choice at MARR =12% ? Use 15 years as the common analysis period. The present worth for project B1 is $ thousand. (Round to one decimal place.)