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19375766
compound Growth and decay
Description
GCSE Maths (ratio, proportion and rates of change) Mind Map on compound Growth and decay, created by lizabeth rawson on 17/09/2019.
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maths
ratio, proportion and rates of change
gcse
Mind Map by
lizabeth rawson
, updated more than 1 year ago
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Created by
lizabeth rawson
almost 5 years ago
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Resource summary
compound Growth and decay
Formula: N= N₀ x (multiplier)ⁿ
N is the amount after day/hours/years
N₀ is the initial amount
the multiplier is the percentage change, eg 5% is 1.05
ⁿ is the number of days/hours/years
Compound interest means that the intest is added on each time
to find the original sample, you divide the amount after days/hours/years by the (multiplier)ᵑ
a $6500 car depreciates by 9% anualy, how much will it cost after 3 years
6500 x (0.91)³
$4898.21
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