A restaurant owner is trying to decide whether to stay open at lunchtime. She has far fewer customers at lunch than at dinner and the revenue she brings in from lunch covers her expenses to buy food and pay the staff, but not much more.
What should the restaurant owner do?

Explanation:

A restaurant owner should not close the restaurant over the lunchtime. He should only do that if he is sure that he won't have any customer over lunchtime but since he has fewer of them, she should open it.

Also, it is giving him the ability to pay for some of the expenses which is also good for the restaurant.

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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.