Question

In stepmber, Daniel and Justin opened a business. During their first three months of business, their average monthly profit was $51. If during their first month, they lost $29, and during their second month, they gained $115, what was their profit or loss for their third month??? Plzzz I will give you 299 points

Answer 1

Answer:

  $67 profit

Step-by-step explanation:

The average of three numbers is their sum, divided by 3. Let x represent the profit during the third month. Then the average monthly profit is ...

  (-29 + 115 + x)/3 = 51

  86 +x = 153 . . . . . multiply by 3, collect terms

  x = 67 . . . . . . . . . . subtract 86

Their profit the third month was $67.