Ramesh deposits a sum of Rs. 80,000 for 4 years at t 10% per annum. (a) Write the formula to find out the simple interest. (b) How much interest does Ramesh earn in 2 years? cre (c) If Ramesh withdraws Rs. 30,000 from his saving after 2 years, what is the total amount that he will receive after 4 years? How long does it take the sum of money becomes three times? Ramesh spends Rs.30,000 for his children's education and health in the ratio of 3:2. Find the amount of expenditure in the children's education and health.