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Answer :

Answer:

[tex]\huge\boxed{\sf \$ 7.50}[/tex]

Step-by-step explanation:

Given that,

6 inches of sandwich = $2.50

Multiply 3 to both sides

6 × 3 inches of sandwich = $2.50 × 3

18 inches of sandwich = $7.50

[tex]\rule[225]{225}{2}[/tex]