IBPS SO Prelims Exam Model Paper 3

Average run after nth innings = Score in nth innings - increase in average(n - 1)
Here, n = 16, Score in nth innings = 160, Increase in average = 5
So, his average run after 16th innings = 160 - {5 × (16 - 1)}
⇒ 160 - 75 = 85
∴ His average run after the 16th innings will be 85.
Traditional method:
Given:
Virat Kohli's score in the 16th innings was 160
His average increased by 5 runs
Formula used:
Average =

(Total‌sum‌of‌all‌numbers)

(Number‌of‌items‌in‌the‌set)

Calculation:
Let, the average up to 15th innings be x
So, according to the question, we can say,
After, 16th innings, his average will be (x + 5)
So, as per the formula, we can say,
15x + 160 = 16(x + 5)
⇒ 15x + 160 = 16x + 80
⇒ x = 80
So, after the 16th innings, his new average = (80 + 5) = 85
∴ His average run after the 16th innings will be 85.