Given the following demand data for the past five months, the three$-$period moving average lore $($Hint: Moving average $=$ sum of demand in period $i/$number of periods in the moving averafe$)$

$\backslash$table$[[$Period$,$Demand$],[$January$,120],[$February$,90],[$March$,100],[$April$,75],[$May$,110],[,]]$

$1\mathrm{.}92\mathrm{.}50$

$2.103\mathrm{.}33$

$3.95\mathrm{.}00$

$4\mathrm{.}99\mathrm{.}00$