Question

sajina deposited Rs 20000 at the rate of 8% p.a in her saving account.After 2 years she withdrew RS.5000 and the total intrest of 2 years . How long should she keep the remaining amount to get total intrest of RS.6800 from the beginning ?​

Answer 1

Explanation:

Let's break down the information given in the problem:

Initial deposit: Rs. 20,000

Interest rate: 8% per annum

Time period: 2 years

Amount withdrawn: Rs. 5,000

Total interest earned in 2 years: Rs. 6,800

First, let's calculate the interest earned on the initial deposit of Rs. 20,000 over 2 years:

Interest = Principal * Rate * Time

Interest = 20,000 * 0.08 * 2

Interest = 3,200

Now, let's determine the remaining amount after the withdrawal of Rs. 5,000:

Remaining amount = Initial deposit - Withdrawal amount

Remaining amount = 20,000 - 5,000

Remaining amount = 15,000

To find out how long she should keep the remaining amount to earn a total interest of Rs. 6,800 from the beginning, we can use the formula:

Time = Total interest / (Principal * Rate)

Time = 6,800 / (15,000 * 0.08)

Time = 6,800 / 1,200

Time = 5.67 years (approx.)

Therefore, she should keep the remaining amount for approximately 5.67 years to earn a total interest of Rs. 6,800 from the beginning.