Answer:
3.22
Explanation:
if 10 folders are 1 dollar then its 1 dollar times 3 which is $3.00
but that gives us 30 folders. 20 get 32 we take the price of one folder 0.11 then add another 0.11 for two more.
add the $3.00 and $0.22 equals. $3.22
$3.22
3 packs of 10 is 3$ then the 22 cents
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