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Today at 11:09 PM
Mathematics

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at a post office always charges a flat one-time fee for any order. One time, Michael sent 35 letters and paid 26 dollars. The next time, he send 18 letters and paid $14.10. How much does the post office charge to send one letter? What is the flat fee?

Answer :

Today at 11:14 PM

Answer:

The post office charges $0.7cents to send one letter, and the fee is $1.5

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