Damari is selling popcorn for three dollars a bag. He already has $40 and his goal to earn is $85 use arithmetic to determine how many bags he needs to sell to make his goal. Is it 15 bags or 28 bags or 205 bags or 135 bags

To determine the number of bags Damari needs to sell, we must find the difference between his goal and the amount of money he already has.

Difference = Goal - Current amount

Difference = $85 - $40 = $45

Since each bag costs $3, we can find the number of bags by dividing the difference by the cost per bag.

Number of bags = Difference / Cost per bag

Number of bags = $45 / $3 = 15 bags

Therefore, Damari needs to sell 15 bags of popcorn to reach his goal.

The correct answer is 15 bags.