Respuesta :

sophiaandoshrit500

Answer:

100 cents

I think

Answer: 1.05

Step-by-step explanation:

Let x be the envelope

    y is stamp (1)

==> x+y= 1.10 ($)

the stamps costs $1 more than the envelope, so

x-y=1 --> x=y+1, instead of wards (1), we get

y+1+y= 1.10 -> 2y+1=1.10

                    ->y= 0.05 -> x= 1.05

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