Answer: The amount of the medicine received by Patient B = 50 milligrams
The amount of the medicine received by Patient A = 150 milligrams
Explanation:
Given : A Patient A receives 3 times the amount of certain medicine as Patient B.
Let x be the dose received by Patient B , then 3x will be the dose received by Patient A.
The two doses add to 200 milligrams.

Hence, the amount of the medicine received by Patient B = 50 milligrams
The amount of the medicine received by Patient A =
milligrams