Question
The book shop has a special offer for post-it-pads:

1 post-it-pad for $3.20
3 post-it-pads for $9

Bryan wants to buy 11 post-it-pads. What is the least amount he has to pay?
3 m

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The book shop has a special offer for post-it-pads:

1 post-it-pad for $3.20
3 post-it-pads for $9

Bryan wants to buy 11 post-it-pads. What is the least amount he has to pay?