Arthur D. answered 11/15/15
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$28,800-$24,000=$4800 profit which is 4800/24,000=48/240=6/30=1/5=20/100=20% profit
the dealer wants to make 20% profit on any car he sells
if a car costs $28,800, he wants a profit of 20%*$28,800=0.2*28,800=$5760
add $5760 to the cost of $28,800; $28,800+$5760=$34,560
$34,560 would be the price asked for the car
or,...
100%+20%=120%=1.2 and 1.2*$28,800=$34,560 again