13.
QUESTION
An
emergency
room
patient's
heart
rate
dropped
30%
to
63
beats
per
minute.
What
was
the
patient's
heart
rate
prior
to
the
drop
in
beats
per
minute?
19
210
44
90
Correct
Step
1:
Interpret
the
Problem
Calculating
the
patient's
original
heart
rate
before
the
drop
requires
some
manipulation
of
the
percentages.
We
need
to
consider
that
the
original
heart
rate
represents
100%.
If
the
original
heart
rate
represents
100%
we must
calculate
how
much
of
the
original
heart
rate
is
remaining
after
a
percent
drop.
Given
the
heart
rate
dropped
by
30%,
we
know,
