A librarian buys a book for $70. He sells it of $80. Then he purchases it back for $90 and resells it for $100. Question: What is his profit? - ENGINEERING.com - AskForum - Engineering Questions and Answers

A librarian buys a book for $70. He sells it of $80. Then he purchases it back for $90 and resells it for $100. Question: What is his profit?

Last Post 08 Oct 2014 09:36 PM by richie. 2 Replies.

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alec

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Posts:167

07 Oct 2014 12:59 AM
A librarian buys a book for $70. He sells it of $80. Then he purchases it back for $90 and resells it for $100. Question: What is his profit?

alastair

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richie

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Posts:171