An office administrator finished word processing a two$-$page letter and its envelope in $13\mathrm{.}8$ minutes. He entered page one of the letter in $5\mathrm{.}9$ minutes and entered page two in $4\mathrm{.}8$ minutes.Compute the time that he spent printing the letter and preparing the envelope. $($i$.$e$.,$ not entering the two pages of text$).$