Consider the allergy medicine Zyrtec. The regular adult dose is 30 milligrams. As
with all medicines, the body gradually filters Zyrtec out of the bloodstream.
The
rate at which the medicine is filtered out is called the flush rate. For Zyrtec,
the
flush rate is 20%. In other words, 24 hours after the pill is taken, 20% of
Zyrtec has flushed out of the body. If 20% of Zyrtec has flushed out of the
body after 24 hours, what percent of Zyrtec remains?
a) 80%
Ob) 70%
c) None of the other choices
d) 20%
O e) 30%