To find out how many bags of popcorn Damari needs to sell, we first identify how much more money he needs to reach his goal.
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Calculate the difference between his goal and his current amount: \[ \text{Amount needed} = \text{Goal} - \text{Current amount} \] \[ \text{Amount needed} = 85 - 40 = 45 \]
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Since each bag of popcorn sells for $3, we can determine how many bags he needs to sell by dividing the additional amount he needs by the price per bag: \[ \text{Number of bags} = \frac{\text{Amount needed}}{\text{Price per bag}} \] \[ \text{Number of bags} = \frac{45}{3} = 15 \]
Thus, Damari needs to sell 15 bags of popcorn to reach his goal of $85.