SOLUTION: hire tool fim finds that their net return from hiring tools is decreasing by 10% per annum.if their net gain on a certain tool this year is £400.find the possible total of all fut

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Question 1140304: hire tool fim finds that their net return from hiring tools is decreasing by 10% per annum.if their net gain on a certain tool this year is £400.find the possible total of all future profits from this tool.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
the sum of this geometric series with |r|<1 (0.9) is 400/(1-r)=400/.1= 4000 pounds.