Question 551262
putting in numbers may make it easier


3 items at $1.00 each, plus 2 free is 5 items for $3.00


5 items for $3.00 is $.60 each  ($3.00 / 5)


the $.60 price is 60% of the $1.00 price [($.60 / $1.00) * 100%]


100% (full price) minus 60% (sale price) equals 40% savings