Math

An investment was worth $1000. By the end of 2010 the investment had lost 30%. What percent must the investment grow by in 2011 to be worth $1000 by the end of 2011? Round your answer to the nearest tenth of a percent.

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asked by Martin

  1. (1000*0.70)(1+r) = 1000
    1+r = 1.428
    r = .428 = 42.8%

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    posted by Steve

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