If I buy a Pack of smokes for Five dollers, And if I start selling smokes for 1 doller per Two smokes. ((Twenty in a pack.)) How much profit would I gain? And how much would I be losing?
20/2=10 pairs of cigarettes.
10 X $1=$10 your gross
$10 - $5=$5 Net profit
$10/$5=2 - 1=1 X 100=100%
You made $5 net profit and your margin was 100%, or doubled your money.