Opportunity Cost, loan vs. cash

Mortgage rate 7%,  cash saving rate 4%.   Total principle is $X

Opportunity Cost for Loan:  $X * 3.2%  see below.   

$X * 20% * 4% +  $X * 80% * 7% - $X * 80% * 4% = $X ( 20% * 4% + $X * 80% * (3%)) = $X * (0.8% + 2.4%) = $X * 3.2% 

Opportunity cost for Cash:  $X * 4% 

所有跟帖： 

• 嗯，謝謝。跟我的算法結果是一樣， -jared35- ♂ (39 bytes) () 06/09/2025 postreply 09:36:14