Does anyone have an estimation of about how much it costs to feed one person in one day? Thanks in advance.

What are you feeding this person? Is this a 100-pound or a 200-pound person? Is this a vegetarian? Are you asking about minimal nutrition needs? Or asking about maximum nutrional needs? Does this person live in a poor country and subsist mostly on rice and vegetables? Or does this person live in a developed country and eat in restaurants?

Please clarify your question.

The average person, I suppose, or minimal nutrition.

Minimum nutrition of aperson is 3250 calories of food (carbohydrate) This found from about 450 grames of rice or wheat. This is taken as standard in a developing county like India.