Question
The stationery kiosk has a special offer for notebooks:

1 notebook for $3.40
4 notebooks for $12

Ben wants to buy 10 notebooks. What is the least amount he has to pay?
3 m

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The stationery kiosk has a special offer for notebooks:

1 notebook for $3.40
4 notebooks for $12

Ben wants to buy 10 notebooks. What is the least amount he has to pay?