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?
विकल्प
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
The difference between the simple interest and the compound interest (compounded annually) on ₹2000 for 2 yr at 8% per annum will be
Mr. Thomas invested an amount of ₹13900 divided in two different Schemes A and B at the simple interest rate of 14% per annum and 11% per annum, respectively. If the total amount of simple interest earned in 2 yr be ₹3508, what was the amount invested in Scheme B?
A certain sum is lent at x % per annum simple interest for 2 years. Instead, if the amount was lent at 2x% per annum simple interest for y more years, then the interest would have been five times the earlier interest. What is the value of y?
The least number of complete years in which a sum of money put out at 20% compound interest will be more than double is
At what rate percent of simple interest will a sum of money double itself in 12 years?
A man invested `1/3` of his capital at 7%; `1/4` at 8% and the remainder at 10%. If his annual income is ₹ 561, the capital is
What will be the compound interest (in ₹) on ₹10,000 for 2 years at 5% per annum, compounded annually?
If ₹12,500 is invested at 12% p.a. on compound interest for one year and 4 months, compounded annually, then the amount received is:
Ram bought 1600 eggs at Rs. 3.75 per dozen. He sold 900 of them at 2 for Re 1 and the remaining at 5 for Rs. 2. His gain percent is:
