Correct Answer - Option 2 : Rs. 20

**Given:**

Total amount = Rs. 120

A's share = Rs. 20 + B's share = C's share - 20

**Calculations:**

Let the share of A be Rs. y.

B's share = y - 20

C's share = y + 20

As given, Total amount = Rs. 120

⇒ y + y - 20 + y + 20 = 120

⇒ 3y = 120

⇒ y = 40

B's share = y - 20

⇒ 40 - 20

⇒ 20

**∴ B's share is Rs. 20.**