At what rate of simple interest will money double itself in 7 years?

9% per yearThe Rule of 72 indicates than an investment earning 9% per year compounded annually will double in 8 years.

Answer. ☆☆☆Let the rate percent per annum be R. Thus, the required rate is 25.99% per annum.

Hence, if we have 2x after 7 years, we'll get its double after the same amount of time (4x at t = 14).

Hope it's clear..

541​%

8% Was this answer helpful?

So rate per annum = 10%.

In how many years will a sum of money double itself with the rate of 10% per annum simple interest? Here, we have R = 10% and have to calculate t for the sum of the money (that is P) to double. Hence, it will take 10 years for the sum of money to double itself with the rate of 10% per annum simple interest.

14.4% per yearSimilarly, if you want to double your money in five years, your investments will need to grow at around 14.4% per year (72/5). If your goal is to double your invested sum in 10 years, you should invest in a manner to earn around 7% every year. Rule of 72 provides an approximate idea and assumes one time investment.

Answer Expert Verified At 5% simple interest, a sum of money doubles itself in 20 years..

Answer. R =? At 5% simple interest, a sum of money doubles itself in 20 years.

Time ; t = 50 3 years so , simple interest , I = p × r × t 100 = p × r × 50 3 × 100 = pr 6 So sum of money after 50 3 years = p + I = p + pr 6 Now according to the question we have ; Sum of money becomes double after 50 3 years , so we have ; 2 p = p + pr 6 ⇒ p = pr 6 ⇒ r = 6 Therefore rate of interest is 6 % .

Applying the formula, we get: (3-1)*100= 16r or r= 200÷16 = 12.5%.

Answer Expert Verified At 5% simple interest, a sum of money doubles itself in 20 years.

Since it is compound interest, the Principal for the second year would be 2P. This again doubles itself in another year because Interest rate is 100%. So at the end of two years it becomes 4 P. Hence at an interest rate of 100% , the sum of money becomes 4 times itself.

If the sum doubles (x2) in 15 years, then it to become 2*2*2 = 8 times as large it should double three times, so three 15 years time period are needed, which is 3*15 = 45 years.

If the sum doubles (x2) in 15 years, then it to become 2*2*2 = 8 times as large it should double three times, so three 15 years time period are needed, which is 3*15 = 45 years.

5% per annumA sum of money become four times at the simple interest rate of 5% per annum in 60 years .

Formula : Hence a sum of money become four times at the simple interest rate of 5% per annum in 60 years ..

5% per annumA sum of money become four times at the simple interest rate of 5% per annum in 60 years . Formula : Hence a sum of money become four times at the simple interest rate of 5% per annum in 60 years .

700/4 in 6 years. Interest = (700/4)-100 = Rs. 300/4; Hence, Rate = Total interest/ given time = 300/4*6 = 12(1/2)%.

10% per annumAnswer. it means at the rate of 10% per annum sum will double itself in 10 years .

Here, we have R = 10% and have to calculate t for the sum of the money (that is P) to double. Hence, it will take 10 years for the sum of money to double itself with the rate of 10% per annum simple interest.

10% per annumAnswer. it means at the rate of 10% per annum sum will double itself in 10 years .

Answer Expert Verified At 5% simple interest, a sum of money doubles itself in 20 years.

12.5% per annumWhere P is principal amount, R is rate of interest and T will be time period. Hence, the rate of interest to double a money in 8 years will be 12.5% per annum.

Answer. rate of interest is 8%.

Answer. Answer: So rate of percentage per annum must be 12.5% to triple the sum.

Answer. Answer: So rate of percentage per annum must be 12.5% to triple the sum.

5%At 5% simple interest, a sum of money doubles itself in 20 years.

721​%

12.5% per annumHence, the rate of interest to double a money in 8 years will be 12.5% per annum.

what is the rate of interest ? => r = 100/15 = 20/3 % = 6.66 %.

Answer: 33 1/3 % p.a.

721​%

In your case, a rate of ~4.8% would double a sum in ~15 years. R=100*I/P*N=100*P/P*15=100/15=20/3=6.666… =6.67%.

So rate of interest should be 3 (1/3) to get some of money double itself..

=PRT100. Where P is principal amount, R is rate of interest and T will be time period. Hence, the rate of interest to double a money in 8 years will be 12.5% per annum.

541​%

5%Answer Expert Verified At 5% simple interest, a sum of money doubles itself in 20 years.

So rate of interest should be 3 (1/3) to get some of money double itself.

Answer. it means at the rate of 10% per annum sum will double itself in 10 years .

Let, the rate of simple interest per annum be R%. Now, I = A- P = 6050 - 5000 = 1050.

641​%

Answer. R =? At 5% simple interest, a sum of money doubles itself in 20 years.

The money doubles itself, it means 100% money is added. So the simple interest is 6.25% per year. Hope it helps.

12.5%At what rate percent per annum will a sum of money double in 8 years. Rate = [(100 x P)/ (P x 8)]% = 12.5% per annum.

Answer. Let, the SUM = Rs X and RATE = r%. TIME (t) = 16 years.

Let the number of years be denoted as n. Given the principle amount triples itself in 5 years. r = 0.4 = 40%.

Here, we have R = 10% and have to calculate t for the sum of the money (that is P) to double.

Hence, it will take 10 years for the sum of money to double itself with the rate of 10% per annum simple interest..

Alternatively you can calculate what interest rate you need to double your investment within a certain time period.

For example if you wanted to double an investment in 5 years, divide 72 by 5 to learn that you'll need to earn 14.4% interest annually on your investment for 5 years: 14.4 × 5 = 72..

20%The rate at which a sum becomes four times of itself in 15 years at S.I., will be : A. = 20%.