Johnny plays shortstop for the Red Sox in the 11-12 year old division. Midway through the 20 game season, he is batting .333 in 30 at-bats. Johnny thinks he can make the All-Star team if he ends the season hitting .400 or better. How many hits does Johnny need in the remaining 10 games to make All-Stars assuming he gets 3 at-bats per game? What will his average be over the last 10 games of the season?