SOLUTION: fink's typing speed increased from 40 words per minute to 45 words per minute. what was the percentage increase?

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Question 362968: fink's typing speed increased from 40 words per minute to 45 words per minute. what was the percentage increase?
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
%2845-40%29%2F40+=+5%2F40+=+1%2F8. The percentage increase is 100%/8, or 12.5%