4r = 100
⇒ r = 25%
Rate of interest r = 25%
Advertisements
Advertisements
प्रश्न
If a principal is getting doubled after 4 years, then calculate the rate of interest. (Hint: Let P = ₹ 100)
बेरीज
Advertisements
उत्तर
Let the principal P = ₹ 100
Given it is doubled after 4 years
i.e. Time n = 4 years
After 4 years A = ₹ 200
∴ A = P + I
A – P = I
200 – 100 = I
After 4 years interest I = 100
I = `"Pnr"/100`
⇒ 100 = `(100 xx 4 xx "r")/100`
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
APPEARS IN
संबंधित प्रश्न
Find the amount to be paid at the end of 3 years in given case:
Principal = ₹ 1,200 at 12% p.a.
Find the interest and the amount on:
₹ 4,000 in `1 1/3` years at 2 paise per rupee per month.
Rohit borrowed Rs. 24,000 at 7.5 percent per year. How much money will he pay at the end of the 4th years to clear his debt?
A sum of money, lent out at simple interest, doubles itself in 8 years. Find :
(i) the rate of interest
(ii) in how many years will the sum become triple (three times) of itself at the same rate percent?
In how much time will the simple interest on ₹ 3,000 at the rate of 8% per annum be the same as simple interest on ₹ 4,000 at 12% per annum for 4 years?
Given the principal = Rs 40,000, rate of interest = 8% p.a. compounded annually. Find Interest for 2nd year.
The difference of interest for 2 years and 3 years on a sum of ₹ 2100 at 8% per annum is ______.
The interest on ₹ 350 at 5% per annum for 73 days is ₹ 35.
Amount received after depositing ₹ 800 for a period of 3 years at the rate of 12% per annum is ₹ 896.
Dhruvika invested money for a period from May 2006 to April 2008 at rate of 12% per annum. If interest received by her is ₹ 1620, find the money invested.
