Question
Lucy spent $11 on biscuits which costs $1.10 each. For every 3 biscuits bought, she received one free biscuit. How many biscuits did she buy altogether?
3 m

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Lucy spent $11 on biscuits which costs $1.10 each. For every 3 biscuits bought, she received one free biscuit. How many biscuits did she buy altogether?