Answer: B
Explanation:
It says that Haley and Greg sold popcorn for 3 hours, and in that process, Haley sold 15 and Greg sold 9. Each of these popcorn boxes costs $2.
First, we will have to add the number of popcorn boxes each one had in order to find the total. We get
(15 + 9)
Then, we can see that each box costs $2. Multiply the number of popcorn boxes by 2 and use the distributive property.
(15 + 9)*2
= (15*2 + 9*2)
Next, we will need to divide by the number of hours to get how much Haley and Greg sold per hour.
(15*2 + 9*2)/3