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Thread: Decidial British currency converter - photo

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    Supporting Member Altair's Avatar
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    Decidial British currency converter - photo


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    Supporting Member mklotz's Avatar
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    The required equation is...

    N = 100*(S/20 + D/240)

    where:

    N = new pence
    S = shillings
    D = old pence

    The equation reduces to...

    N = 5*S + D/2.4

    Plugging the 4/11 from the photo into this yields:

    N = 5*4 + 11/2.4 = 20 + 4.583333... = 24.583333...

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    Last edited by mklotz; Jun 4, 2021 at 12:42 PM.
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    Regards, Marv

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