Question

The average number of people at a concert over 3 nights is 125. On the first night, there were 151 people at the concert. The same number of people attended the second and third night. How many people attended on each of the second and third nights?​

Answer 1

164 people

Explanation:

Let's say x = # of people in night 2 and 3

Average = (n₁ + n₂ + n₃ + ...)/n

Plug in known numbers: (125 + x + x)/3 = 151

Multiply + simplify: 125 + 2x = 453

Subtract: 2x = 328

Divide: x = 164