Let the income tax be ₹x.
Secondary education cess = 1% of x
⇒ 500 = 1x100
⇒ x = ₹50,000
Income tax being paid is ₹50,000
We now have to check the tax slab for Senior citizen because age mentioned is 65 years.
Upto ₹3,00,000 is exempted.
Income tax slab for the income between ₹3,00,000 to 5,00,000 = ₹10,000
Hence the income tax that is paid is ₹50,000 - ₹10,000 = ₹40,000
As we know it falls in 20% slab which is between ₹5 lakhs and ₹10 lakhs.
Let the remaining income be ₹y.
20y100 = ₹40,000
⇒ y = 40,000×10020 = ₹2,00,000
∴ Total Income = ₹2,00,000 + ₹5,00,000 = ₹7,00,000