Advertisements
Advertisements
प्रश्न
At what rate percent will Rs.12000 yield Rs.13891.50 as compound interest in 3 years?
उत्तर
Given : A = Rs.13891.50, P = Rs.12000, N = 3years
13891.50 = `12000(1 + "r"/100)^3`
⇒ `(13891.50)/(12000) = (1 + "r"/100)^3`
⇒ `(13891.50)/(12000 xx 100) = (1 + "r"/100)^3`
⇒ `(9261)/(8000) = (1 + "r"/100)^3`
⇒ `(21)/(20) = 1 + "r"/(100)`
⇒ `(21)/(20) - 1 = "r"/(100)`
⇒ `(1)/(20) = "r"/(100)`
⇒ r = 5%.
APPEARS IN
संबंधित प्रश्न
According to a census taken towards the end of the year 2009, the population of a rural town was found to be 64,000. The census authority also found that the population of this particular town had a growth of 5% per annum. In how many years after 2009 did the population of this town reach 74,088 ?
The population of a town decreased by 12% during 1998 and then increased by 8% during 1999. Find the population of the town, at the beginning of 1998, if at the end of 1999 its population was 2,85,120.
A sum of money, invested at compound interest, amounts to Rs. 16,500 in 1 year and to Rs. 19,965 in 3 years. Find the rate per cent and the original sum of money invested.
The difference between C.I. and S.I. on Rs. 7,500 for two years is Rs. 12 at the same rate of interest per annum. Find the rate of interest.
The ages of Pramod and Rohit are 16 years and 18 years respectively. In what ratio must they invest money at 5% p.a. compounded yearly so that both get the same sum on attaining the age of 25 years?
Find the amount and the compound interest payable annually on:
Rs.16000 for 2 years at 15% and 12% for the successive years.
Find the amount and compound interest on Rs.7500 for 1`(1)/(2)` years at 8%, payable semi-annually.
Sunil borrows Rs.50,000 at 10% S.I. for 1`(1)/(2)` years. He immediately invests the entire amount for 1`(1)/(2)` years at 10% compounded annually. What is his gain at the end of the stipulated time, when he repays his loan?
Find the amount on Rs 36000 in 2 years 15% p.a. compounded annually.
Calculate the rate percent when Rs 28000 amount to Rs 30870 in 2 years at compounded annually.
