Rounded to the nearest whole number, the amount of medicine remaining in the body after 10 hours is

milligrams.

It depends on the specific situation and the dosage of the medicine, but assuming a constant rate of elimination, we can use the formula:

Amount remaining = Initial amount * (1/2)^(time/half-life)

If we assume the half-life of the medicine is 4 hours, the amount remaining after 10 hours would be:

Amount remaining = Initial amount * (1/2)^(10/4) = Initial amount * (1/2)^2.5

Rounding to the nearest whole number, the amount remaining after 10 hours would be approximately 25% of the initial amount.