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29 March, 18:39

the gestation period of rhinos (487 days) is what percent longer than the gestation period of dogs (65days).

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  1. 29 March, 21:45
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    percent change = ((new value) - (reference value)) / (reference value) * 100%

    ... = (487 - 65) / 65 * 100%

    ... = 422/65 * 100%

    ... = 6.492 * 100%

    ... ≈ 649%

    The gestation period of rhinos is 649% longer than the gestation period of dogs.
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