Which expressions correctly states the version of the elasticity formula to predict the change in quantity demanded?

a. percentage  change  in  quantity  demanded  divided  by  percentage  change  in  price  equals  price elasticity of demand

Explanation:

As we know that

The price elasticity of demand shows the relationship between the change or varied in quantity demanded with respect to change or varied in price

Here the change or varied in quantity demanded comes on the numerator side while the change or varied in price comes on the denominator side

So the first option is correct

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.