Ramesh spends 20% of his monthly salary on food, 10% of the remaining on conveyance and clothes and saves 75% of the remaining amount. If his monthly salary is Rs.20,000, how much money does he save every month ?  Select the correct option:
A) Rs.2645
B) Rs.7945
C) Rs.3694
D) Rs. 10080
E) Rs.1589
Explanation:   Ramesh's monthly income = Rs.20,000   He spends 20% on food.   The total money spent on food = 20/100 * 20000 = Rs. 4000   Now, his monthly remaining income = Rs.20000 – Rs.4000 = Rs. 16000   Out of Rs. 16000, he spends 10% on conveyance and clothes.   The total money spent on conveyance and clothes = 10/100 * 16000 = Rs. 1600   Now, his monthly remaining income = Rs.16000 – Rs.1600 = Rs. 14400   Out of Rs. 14400, he saves 70%.   Amount saved = 70/100 * 14400 = Rs. 10080   ANSWER:Rs. 10080
<result>D</result>
Ramesh spends 20% of his monthly salary on food, 10% of the remaining on conveyance and clothes and saves 75% of the remaining amount. If his monthly salary is Rs.20,000, how much money does he save every month ?