Answer:
I believe the correct answer is 60%
820=P(1.05)^3
P=708.35
I'm sorry I don't know how explain but that is the answer to the problem; 708.35
Commission = 6% of sales
" 6% " means 0.06
" of " means "times"
Commission = (0.06) x (sales)
$300 = (0.06) x (sales)
Divide each side by 0.06 : $300 / 0.06 = sales
<em> $5,000 = sales </em>
