A batsman scores 92 runs in the $15^{th}$ inning and thus increases his average by 4. What is his average after the $15^{th}$ inning?
Answer & explanation
Correct answer: option 4
Lets average of score in 14 innings be x
Sum of runs in 14 innings = 14x
14x + 92 = (x + 4) x 15
⇒ 14x + 92 = 15x + 60
⇒ x = 32
New average is 32 + 4 = 36