Repeated Percentage

Mind Map by , created over 6 years ago

Maths (Number) Mind Map on Repeated Percentage, created by abbylebus on 05/13/2013.

111
0
0
 Created by abbylebus over 6 years ago
GCSE Maths: Geometry & Measures
Fractions and percentages
HISTOGRAMS
Biology -B2
Diseño de Software
New GCSE Maths
GCSE Maths: Algebra & Number Quiz
Using GoConqr to study Maths
FREQUENCY TABLES: MODE, MEDIAN AND MEAN
GCSE Maths Symbols, Equations & Formulae
Repeated Percentage
1 When a quantity is increasing or decreasing over a period of time, we usually use multipliers to work out the percentage change.
2 Example:
2.1 A boat was bought for £13700. During the first year, it depreciated (decreased) in value by 15%, the second year by 10% and the third year by 8%. Work out the value of the boat at the end of the third year.
2.1.1 A decrease of 15% is a multiplier of 0.85 A decrease of 10% is a multiplier of 0.9 A decrease of 8% is a multiplier of 0.92
2.1.1.1 The value of the boat is 13700 x 0.85 x 0.9 x 0.92
2.1.1.1.1 =£9642.06