if krishna sees a dress for 27 dollars but also one she really loves for 29 dollars which should she buy if she has 40 dollars and has already committed to eating dinner with friend at a 12 a meal diner

In this situation, Krishna should buy the dress she really loves for 29 dollars. After accounting for the dinner expense of 12 dollars, she will have 28 dollars remaining. This is enough to purchase the dress she loves while still staying within her budget. It is important to prioritize what brings joy and satisfaction when making purchasing decisions.