Find the breakeven (Ai*) for the following projects (Incremental cash flow). Using interpolation. Note: Do not write the percentage sign (%) in the blank. Just write a number with two digits after decimal point like 18.32. A B First cost, $ - 12,000 -69,000 Annual operationg cost, $ -53,000 -42,000 Salvage value, $ 6,000 11,000 Life, year 3 6