Question
The stationery kiosk has a special offer for rulers:

1 ruler for $1.10
2 rulers for $2

Eric wants to buy 11 rulers. What is the least amount he has to pay?
3 m

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The stationery kiosk has a special offer for rulers:

1 ruler for $1.10
2 rulers for $2

Eric wants to buy 11 rulers. What is the least amount he has to pay?