9 boxes were bought by Totsakan for $36.54 which $4.06 costs each envelope.
Step-by-step explanation:
Total money spent on buying envelopes= $36.54
Cost of one envelope= $4.06 per box
Total no. of envelopes Totsakan bought [tex]=\frac{\text { Total money spent on buying envelopes }}{\text { Cost of One Envelope }}=\frac{36.54}{4.06}=9[/tex] Hence, Totsakan bought 9 boxes in total which it costs $36.54.
