Question
A bookshop has a sale promotion for pens.
One pen costs 1.50.
Buy 2 and get 1 pen free.

How many pens can Carl get if he spends $9 on the pens?
3 m

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A bookshop has a sale promotion for pens.
One pen costs 1.50.
Buy 2 and get 1 pen free.

How many pens can Carl get if he spends $9 on the pens?