Question
The stationery kiosk has a special offer for post-it-pads:

1 post-it-pad for $1.30
3 post-it-pads for $3

Sam wants to buy 10 post-it-pads. What is the least amount he has to pay?
3 m

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The stationery kiosk has a special offer for post-it-pads:

1 post-it-pad for $1.30
3 post-it-pads for $3

Sam wants to buy 10 post-it-pads. What is the least amount he has to pay?