Question

Sally scored an average if 85 points in a game of 3 rounds

Round 1 2 3
Score ? 84 81
What was Sally's score in round 1?

Help me please I stuck with this question. ​

Answer 1

90

Explanation:

The average is the sum of the scores divided by the number of rounds:

85 = (x + 84 + 81) / 3

x = 90