Javier plays 2 baseball games a week. In each of his first 20 games, he averaged 2 hits. If he has 10 games left, how many hits a game does he have to average to bring his average for the season up to 3 hits a game? Let's think first. Chain of thought:
There are thirty games in the season because 20 + 10 = 30. He needs to get 90 hits on the year to average 3 hits a game because 30 x 3 = 90. He has 40 hits already because 20 x 2 = 40. He needs 50 hits in the final 10 games because 90 - 40 = 50. He needs to average 5 hits a game because 50 / 10 = 5.
Therefore, the answer is 5.