Can someone help me on this question? Thanks a lot!

66% of all statistics professors in the country received a sample copy of a new statistics book. Given that only 43% of the professors who received the sample copy had used the book as main text book, as compared to 37% who did not received the books. Draw the situation in an appropriate diagram. What is the percentage that a professor who received the synopsis.

The wording is unclear at a couple places. Here is one possible correction:

66% of all statistics professors in the country received a sample copy of a new statistics book. Given that only 43% of the professors who received the sample copy used the book as a main text book, as compared to 37% **of those** who did not **receive** the book. Draw the situation in an appropriate diagram. What percentage of professors **who used the book had** received the **sample copy [?]**.

I'm guessing that the "synopsis" mentioned in the last sentence is supposed to be "sample copy" as previously mentioned, and I made up the rest; I have no idea what the question is really supposed to be.

Another diagram you could use would be a table with rows for "received" and "didn't receive", and columns for "used" and "didn't use".