By approximately what percent did the sale of nonfiction titles increase ... ...

By approximately what percent did the sale of nonfiction titles increase from 1984 to 1987?
(A)    42%
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Nova Math - Problem Set W: Graphs

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Posted: 04/13/2012 17:38
Not sure where the 57 and 40 are coming from in the explanation. Sales in 84 were 30,000 and in 87 were 52,000.
Arcadia
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Posted: 04/13/2012 18:13
It asks about Nonfiction numbers.