Answer
The firewood weighs $1,558$ pounds.
Work Step by Step
RECALL:
$P=BR$ where $P$=part or amount (percentage), $B$=base, and $R$=rate
The given problem has:
$B= 1640$ pounds
$R= 95\%$
Use the formula above to find the weight of the firewood
$=1640 \times 95\%
\\=1640 \times 0.95
\\=1558$
Thus, the firewood weighs $1,558$ pounds.