If a car costs $7,800 and its percent of depreciation is 45%, what is the amount of depreciation?
we have that
100%-45%=55%=55/100=0.55
therefore
Multiply $7,800 by the factor of 0.55
$7,800*0.55=$4,290
Find out the difference
$7,800-$4,290=$3,510
the answer is $3,510