The correct answer to this question is fewer meals would be served when price of dinner increased from 10 to 15.
As there would be sudden inflation in the price of the products sold by the restaurants all at once people would hesitate to buy them.
This would lead to an decrease in the selling of meals thus leading to fewer meals sold.
Inflation means an sudden increase in the price of an product. Usually inflation leads to a general fall in the total number of products sold.
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