A batsman makes a score of 95 runs in the 13th match and thus increases his average runs per match by 4. What is his average after the 13th match?
Let the average after 13th match be ‘x’
Average before 13th match = x - 4
Now, Total runs after 13th match = Total runs before 13th match + runs scored in 13th match
⇒ 13x = 12(x - 4) + 95
⇒ 13x - 12x = 95 - 48
⇒ x = 47
∴ Average after 13th match = 47