Advertisements
Advertisements
प्रश्न
Calculate the rate per cent at which Rs 16,000 will yield Rs 3,876.75 as compound interest in 3 years.
Advertisements
उत्तर
P = Rs 16,000; A = Rs (16,000+3,876.75) = Rs 19,876.75 ; t = 3 years ; r = ?
`"A" = "P" (1 + "r"/100)^"n"`
Rs 19,876.75 = Rs 16,000 `(1 + "r"/100)^3`
`19876.75/16000 = (1 + "r"/100)^3`
`(27.08)^3/(25.19)^3 = (1 + "r"/100)^3`
`2708/2519 = 1 + "r"/100`
`"r"/100 = 2708/2519 - 1 = (2708 - 2519)/2519 = 189/2519`
`"r" = 18900/2519 = 7.5 %`
Hence , r = 7.5%
संबंधित प्रश्न
Amita wanted to start a business for which she needed Rs, 40000. She borrowed this from Dolly at 10% p.a compounded semi-annually. Find the extra amount that she needs to pay at the end of two years to clear her debt.
Rajeev borrowed Rs 15,000 from Sanjay at 12% p.a. compound interest. After 2 years Rajeev gave Rs 7,500 and a scooter to clear the account. Find the cost of the scooter.
The interests on two successive years for a sum invested at compound interest compounded annually are Rs 840 and Rs 940.80. Calculate the rate of interest and the sum invested.
The cost of a scooter depreciated by Rs 5100 during the second year and by Rs 4,335 during the third year. Calculate
the rate of depreciatlon
The cost of a scooter depreciated by Rs 5100 during the second year and by Rs 4,335 during the third year. Calculate
The cost of a machine depreciated by Rs 2592 during the third year and by Rs 2332.80 during the fourth year. Calculate :
The rate of depreciation.
Find the principal which will amount to Rs 22,344 in 2 years at compound interest if the rates of interest for the successive years are 12% and 14%?
On what sum of money will the compound interest for `2 1/2` years at `12 1/2`% per annum amount to Rs 82,734.37?
If the interest is compounded half yearly, calculate the amount when the Principal is Rs. 7,400, the rate of interest is 5% per annum and the duration is one year.
In how many years will Rs. 15,625 amount to Rs. 17,576 at 4% p.a., compound interest?
