Correct Answer - Option 4 : 39
Given:
Score in 17th match = 87
In 17th match increase in average is 3
Formula used:
Average = Sum of observations/Number of observations
Calculation:
Let the initial average be x
New average = x + 3
x + 3 = {(16 × x) + 87}/17
⇒ 17x + 51 = 16x + 87
⇒ 17x – 16x = 87 – 51
⇒ x = 36
⇒ New average = 36 + 3 = 39
∴ His average after 17th match is 39.