Let's break down the problem step by step.
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Price of Leo's smoothie: The price is given as \( n \) dollars.
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Price of Pareesa's smoothie: It is $3 more than Leo’s smoothie, so the price is: \[ n + 3 \text{ dollars} \]
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Total cost of smoothies: The total cost for both smoothies is: \[ n + (n + 3) = 2n + 3 \text{ dollars} \]
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Cost per person before tip: Since Leo and Pareesa want to split the total cost evenly, the cost per person before the tip is: \[ \frac{2n + 3}{2} = n + 1.5 \text{ dollars} \]
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Calculating the tip: Both Leo and Pareesa pay a 20% tip. The tip is 20% of their individual cost before tip: \[ 0.2 \times (n + 1.5) = 0.2n + 0.3 \text{ dollars} \]
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Total cost per person including the tip: Adding the tip to the cost per person, we get: \[ (n + 1.5) + (0.2n + 0.3) = n + 1.5 + 0.2n + 0.3 = (1 + 0.2)n + (1.5 + 0.3) = 1.2n + 1.8 \text{ dollars} \]
Thus, the expression representing the amount each of them paid is: \[ \boxed{1.2n + 1.8} \]
Final answer: \( 1.2n + 1.8 \) dollars per person after including the tip.
How much did each of them pay before the tip? Each paid \( n + 1.5 \) dollars before the tip.