If a person consumed a diet containing 2500 kcal, of which 35% came from protein, approximately how many grams of protein would be ingested?

218.75 grams of protein.

Explanation:

If 2500 protein is consumed and its 35% energy is provided by protein then:

2500:35*100 = 875 kcal would be provided by protein.

As one gram of protein provide 4 kcal of energy:

875:4 = 218.75 grams of potein would be consumed.

Remeber the calories and kcal for food is same.