Problema Solution
to the nearest ml. how much 0,4% ampicillin do you have to have 40 ml of 0,5% ampicillin solution to have 0,4 ml ampicillin total
Answer provided by our tutors
Let 0.4% of y ml ampicillin required to be added to to 0.5% of 40 ml ampicillin.
By the given question:
0.4y/100+(0.5/100) x 40 = 0.4
Or, 0.4y+20=40
or y=20/0.4=50.
Therefore, 0.4% of 50 ml ampicillin required to be added to to 0.5% of 40 ml ampicillin to have 0.4 ml ampicillin