Posted by **Chris** on Thursday, July 3, 2008 at 4:04pm.

I can't calculate 1 as the answer given to the following problem. I keep getting 2. Can you show me where am I going wrong?

The spread of rumor among 100 people can be approximated by the equation log10(x) – log10(100-x) = (0.1)t – log10(90), where x is the number of people who have heard the rumor after t days. How many people have heard the rumor after 10 days?

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