The PW-based relation for the incremental cash flow series to find Ai* between the lower first-cost alternative X and alternative Y has been developed. 0=-20,000 + 9000(P/A,Ai* ,10) + (-4000(P/F,4i * ,10)) Determine the highest MARR value for which Y is preferred over X. Any MARR value less than % favors Y. The PW-based relation for the incremental cash flow series to find Ai* between the lower first-cost alternative X and alternative Y has been developed. 0=-20,000 + 9000(P/A,Ai* ,10) + (-4000(P/F,4i * ,10)) Determine the highest MARR value for which Y is preferred over X. Any MARR value less than % favors Y