Correct Answer - Option 3 : 145
Given
A cricket batsman had a certain average of runs for his 11 innings. In the 12th innings, he made a score of 90 runs and thereby his average of runs was decreased by 5. His average of runs after 12th innings is
Concept used
Average
Calculation
Let the average be x runs for 11 innings
As per the question,
⇒ 11x + 90 = (x - 5) × 12
⇒ 11x + 90 = 12x - 60
⇒ x = 150
His average after 12th innings
⇒ 150 - 5 = 145