Question
Lynn spent $13 on biscuits which costs $2.60 each. For every 2 biscuits bought, she received one free biscuit. How many biscuits did she buy altogether?
3 m

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Lynn spent $13 on biscuits which costs $2.60 each. For every 2 biscuits bought, she received one free biscuit. How many biscuits did she buy altogether?