Final answer:
To receive 100% of the daily recommended calcium, Benito needs to drink 25 ounces of milk, which equates to 375 calories since one fluid ounce contains 15 calories.
Step-by-step explanation:
If one fluid ounce of milk contains 15 calories and 4% of the daily recommended amount of calcium, Benito will need to drink enough milk to cover the remaining 96% of his daily calcium needs to reach 100%.
To do so, Benito will have to drink 25 fluid ounces of milk, as 4% goes into 100% a total of 25 times (100 / 4 = 25). This means he will consume 25 times the calories in one fluid ounce.
Therefore, the total calories Benito will consume is 15 calories/ounce × 25 ounces, which equals 375 calories.
Benito needs to consume 375 calories of milk to get 100% of the daily recommended amount of calcium.