Mitchell, an NFL running back, rushed for an average of 120 yards per game last season. This season, his average is 90% higher. What is his average this season?

To find Mitchell's average rushing yards per game this season, we need to calculate 90% of his average from last season and add it to his average from last season.

90% of 120 yards = 0.90 * 120 = 108 yards

His average this season is:
120 yards + 108 yards = 228 yards

Therefore, Mitchell's average rushing yards per game this season is 228 yards.