Question

A cricketer has a certain average for 9 innings. in the tenth innings, he scores 100 runs, there by increasing his average by 8 runs. find his new average?

Answer 1

Initial Average = x Total runs scored in 9 innings = 9x Total runs scored in 10 innings = 9x+100 New Average = (9x+100)/10 Since average increases by 8, x+8=(9x+100)/10 10x+80 = 9x+100 x = 20 New average = 20 + 8 = 28

Answer 2

New Average = 28  

Step-by-step explanation:

Average Score = X

innings = 9

Total Score = 9X

Made = 100

Total = 9X + 100

Innings = 9 +1 = 10

=> New Average = (9X + 100)/10

=>  X + 8 =  (9X + 100)/10

=> 10X + 80 = 9X + 100

=> X = 20

=> X + 8 = 28

New Average = 28

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