Mr. Rama Spend 30% of his income on food. 20% of the remaining on books 10% of remaining on entertainment and save the remaining Rs. 10,080. Find his income?

Sure, let's solve this step by step:

1. Let's assume Mr. Rama's income is X.

2. He spends 30% of his income on food, so he is left with 70% of his income. We can represent this as 0.70X.

3. He then spends 20% of the remaining income on books. So, he is left with 80% of his remaining income. We can represent this as 0.80 * 0.70X = 0.56X.

4. He then spends 10% of the remaining income on entertainment. So, he is left with 90% of his remaining income. We can represent this as 0.90 * 0.56X = 0.504X.

5. We know that the remaining amount after all the expenses is Rs. 10,080. So, we can set up the equation 0.504X = 10,080.

6. To solve for X, we divide both sides of the equation by 0.504. So, X = 10,080 / 0.504 = Rs. 20,000.

So, Mr. Rama's income is Rs. 20,000.