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Easy maths question for Biology help? watch

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    1) Calculate the rate of change in the percentage of cells between 10 and 90 years of age.

    Ok so at 10 years it is 98%
    and at 90 years it is 26%

    The difference is 72%.
    But how do I work out the rate?
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    Divide the percentage difference by the time difference (in years)
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    So its just 72 / 80?
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    yep
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    (Original post by Marykate5)
    So its just 72 / 80?
    :yep: (if you want the rate in terms of % change per year)
 
 
 
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Updated: March 19, 2009

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