Determining missing items in return on investment computation

One item is omitted from each of the following computations of the return on investment:

$\backslash$table$[[\backslash$table$[[$Return on$],[$Investment$]],=,\backslash$table$[[$Profit$],[$Margin$]],x,\backslash$table$[[$Investment$],[$Turnover$]]],[14\%,=,10\%,x,($a$)],[($b$),=,16\%,x,0\mathrm{.}75],[33\%,=,($c$),x,1\mathrm{.}5],[10\%,=,20\%,x,($d$)],[($e$),=,15\%,x,1\mathrm{.}2]]$

Determine the missing items identified by the letters as shown above. If required, round your answers to two decimal places.

$($a$)$

$($b$)\%$

$($c$)\%$

$($d$)$

$($e$)\%$