Let say Dr. Hong = H
Dr. Tannenbaum = T
Dr. Evans = E
Now, Dr. Hong prescribed 0.019 liters more
medicine than Dr. Tannenbaum.
It means H = 0.019 + T
Also, Dr.Evans prescribed 0.02 liters less than
Dr. Hong.
It means E= 0.02 - H
With the information before, we replace the H value on the E equation:
E= 0.02 - H
E = 0.02- 0.019 + T
E = 0.001 + T
This means that Dr. Evans prescribed 0.001 more medicine than Dr.Tannenbaum
So:
E > T, H> T and E< H
Therefore:
-Who prescribed the most medicine? Dr. Hong prescribed more medicine than Dr. Evan and Dr.Tannenbaum
-Who prescribed the least? Dr.Tannenbaum prescirbed the least medicine