First of all, know that preserved lemons will keep for quite a while in the fridge. They are preserved, after all. Kept refrigerated, these lemons will keep for about a year, so don't feel that you have to rush to use them up before they go bad.You eat the whole lemon, rind and all â though I'd recommend removing the seeds first.hey are preserved, after all. Kept refrigerated, these lemons will keep for about a year, so don't feel that you have to rush to use them up before they go bad. You eat the whole lemon, rind and all â though I'd recommend removing the seeds first.
Growth Rate in the Present Value of Stock Formula. The growth rate used for calculating the present value of a stock with constant growth can be estimated as. Multiplying the retention ratio by the return on equity can then be reduced to retained earnings divided average stockholder's equity.
Method 3 of 3: Learn how to calculate the annualized rate of growth in the GDP to see the comparative straight-line growth or decline in the GDP over a period of 1- year. 1. Follow this formula: GR = (1/N) X (VE-B) / B.1  Here, GR equals the rate of annualized growth in the GDP without compounding. Here, GR equals the rate of annualized growth in the GDP without compounding. 2  N is the number of years or quarters between the beginning and the end of the growth (or decline). 3  VE refers to the value at the end of the period. 4  VB is the value at the beginning.