Answer:
Following a single dose, 0.02mg of the drug is detected.
Step-by-step explanation:
Percentage problems can be solved as a rule of three problem.
In a rule of three problem, the first step is identifying the measures and how they are related, if their relationship is direct of inverse.
When the relationship between the measures is direct, as the value of one measure increases, the value of the other measure is going to increase too. In this case, the rule of three is a cross multiplication.
When the relationship between the measures is inverse, as the value of one measure increases, the value of the other measure will decrease. In this case, the rule of three is a line multiplication.
Calculate the quantity of drug detected, in milligrams, following a single dose.
The quantity is 0.02% of 100mg. So:
100mg - 100%
xmg - 0.02%
100x = 100*0.02
x = 0.02mg
Following a single dose, 0.02mg of the drug is detected.
