Advertisements
Advertisements
प्रश्न
A sum amounts to Rs. 9680 in 2 years and to Rs. 10648 in 3 years respectively at compound interest. What will be the amount of the same sum `1 2/5` is invested for years at the same rate of compound interest?
पर्याय
Rs.9025
Rs.9152
Rs.9215
Rs.9251
Advertisements
उत्तर
Rs.9152
Explanation:
Let the sum is ₨. p and rate of C.I. is r% then, from, question,
`9680="p"(1+"r"/100)^2` .......(i)
and 10648 = `"p"(1+"r"/100)^3` .............(ii)
from (i) and (ii),`1+"r"/100=10648/9680`
`1+"r"/100=1.1`
⇒ r = 10%
From (i), `"p"(1+10/100)^2=9680`
p(1.21) = 9680
p = ₨. 8000
`"t"=1 2/5` years = 1.4 years
Required Amount`"A"=8000(1+10/100)^1.4`
≈ ₹₨. 9152.
APPEARS IN
संबंधित प्रश्न
Formula such as dollars of interest earned divided by total dollars invested is used to calculate
If ₹80 amounts to ₹140 in 4 years, what will ₹96 amount to in 10 years at the same rate of interest per annum?
A person borrows ₹ 5000 for 2 yr at 4% per annum simple interest. He immediately lends it to another person at `6 1/4` per annum for 2 yr. Find his gain in the transaction per year.
There is 60% increase in an amount in 6 year at simple interest. What will be the compound interest of ₹ 12000 after 3 years at the same rate?
The least number of complete years in which a sum of money put out at 20% compound interest will be more than double is
What would be the simple interest on an amount of Rs. 9600 at the rate of 6% per annum after 3 years?
A person borrows 10000 for 2 years at 4% p a simple interest he immediately lends it to another person at 6.5 % p. a. for 2 years. Find his total gain in the transaction.
The difference between simple interest and compound interest on a certain sum of money is Rs. 32 at 8% per annum for 2 years. Find the amount.
At what rate percent per annum with simple interest will a sum of money double in 12.5 years?
The ratio of the amount for 3 years under C.I. annually and for one year under S.I. is 36:25. If the same rate of interest is charged then find the rate-
