Question
A shop was having promotion for pens. For every 2 pens bought, 1 pen would be given free. Each pen costs $2. Kathy paid $12 for some pens. How many pens did she get altogether?
4 m

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A shop was having promotion for pens. For every 2 pens bought, 1 pen would be given free. Each pen costs $2. Kathy paid $12 for some pens. How many pens did she get altogether?