Você procurou por: preface to the revised edition (Latim - Espanhol)

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and, in the opposite direction, to decrease 100 by 25%, we did: final value / conversion factor = initial value 100 / 1.25 = 80 this last is exactly what we need now: to find the initial value of our house in 2006, having its final value in 2007, 331, and the percentage change, 13.2%, which is 1.132 in unit format. consequently, we will do the same operation as in this last example: final value / conversion factor = initial value 331 / 1.132 = 292 finally, we only have to complete our table of variation in prices and interpret the results: price of a house in denmark 1998 2006 2007 100 292 331 so, answering the question of this exercise, 'by how many per cent did real estate prices increase in denmark from 1998 to 2006', we can affirm that the right answer is option a) 192%, because the price went from 100 to 292, this means: 292 - 100 = 192 increase. myadvice the key of my method is to take 100 as the initial value, corresponding to the first year of the relevant period. this way you will directly find the variation in percentage (related to 100) after your calculations. 69
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