Question 725580
Let 'x' be the total runs until 16 innings.
Score in 17th innings = 85

Average of all 17 innings = (x + 85)/17

Average of 16 innings = x/16

Given : (x+85)/17 = (x/16) + 3

x = 544

Average before 17th innings = x/16 = 544/16 = 34