Correct Answer - Option 5 : 15 runs

**Given:**

A batsman’s 16^{th} innings score = 60 runs

The average increases by = 3

**Calculation:**

Let the average after 16^{th} innings be x

The average after 15^{th} innings = (x – 3)

∴ According to the question:

⇒ 16x = 15 (x – 3) + 60

⇒ 16x = 15x – 45 + 60

⇒ 16x – 15x = 15

⇒ x = 15

**∴ the batsman’s average after his 16**^{th} innings is 15 runs.