Correct Answer - Option 4 : Rs. 150

**Given:**

Income spent = 84%

Saving = Rs. 24

**Formula used:**

Saving = Saving% × Total income

**Calculation:**

Saving% = (100 – 84) = 16%

Now,

Let the income be x

According to the question

24 = 16x/100

⇒ 2400 = 16x

⇒ x = Rs. 150

**∴ The monthly income is Rs. 150**