A man spends Rs. 3500 per month and save 12 ½% of his income. His monthly income is?

1. Rs. 4400
2. Rs. 4000
3. Rs. 4270
4. None

Let’s denote:

• Monthly income = X

We know:

• He spends Rs. 3500 per month.
• He saves 12.5% of his income.

We can write the equation:

• Spending + Savings = Income
• 3500 + 12.5% of X = X

Solving the equation:

• Convert 12.5% to a decimal: 12.5/100 = 0.125
• 3500 + 0.125X = X
• Subtract 0.125X from both sides:
  • 3500 = 0.875X
• Divide both sides by 0.875:
  • X = 3500 / 0.875
  • X = 4000

Therefore, his monthly income is Rs. 4000.

So, the correct answer is (B) Rs. 4000.