Advertisements
Advertisements
प्रश्न
Calculate the arnount and the cornpound interest for the following:
Rs 20,000 for 3 years at `7 1/2 %` for the first year, 8% for the second year and 10% for the third year.
Advertisements
उत्तर
P = Rs 20000;
(i) Interest for he first year
T = 1 year , R = `7 1/2 %` for first year = `15/2 %`
`= ("Rs" 20000 xx 15/2 xx 1)/100`
`= ("Rs" 20000 xx 15 xx 1)/ (2 xx 100)`
= Rs 1500
(ii) Principal for the second year
= Amount after one year
= Rs 20000 + Rs 1500
= Rs 21500
(iii) Interest for the second year
T = 1 year , R = 18 % for second year
`= ("Rs" 21500 xx 8 xx 1)/100`
= Rs 1720
(iv) Principal for the third year
= Amount after second year
= Rs 21500 + Rs 1720
= Rs 23220
(v) Interest for the third year
t = 1 year , R = 10 % for second year
`= ("Rs" 23220 xx 10 xx 1)/100`
= Rs 2322
Therefore Amount at the end of 3rd year
= Rs 23220 + Rs 2322
= Rs 25542
Amount = Rs 25542
C.I. = A - P
= Rs (25542 - 20000)
C.I. = Rs 5542
APPEARS IN
संबंधित प्रश्न
Jaya borrowed Rs. 50,000 for 2 years. The rates of interest for two successive years are 12% and 15% respectively. She repays 33,000 at the end of the first year. Find the amount she must pay at the end of the second year to clear her debt.
Ameesha loaned Rs. 24,000 to a friend for `2 1/2` at 10 % p.a. compound interest.
Calculate the interest earned by Ameesha.
Ameeha loaned Rs. 24,000 to a friend for `2 1/2` at 10 % p.a. compond interest.
Calculate the amount received by her at the end of time period.
Calculate the amount and the compound interest for the following :
Rs. 12500 for 2 years at 8% for the first year and 10% for the second year.
Find the sum invested at 8% p.a. compound interest on which the interest for the third year exceeds that of the first year by Rs 166.40.
Find the sum invested at `12 1/2` p.a. compound interest on which the interest for the third year exceeds that of the first year by Rs 531.25.
Rs.16,000 is invested at 5% compound interest compounded per annum. Use the table, given below, to find the amount in 4 years.
| Year ↓ |
Initial amount (Rs.) |
Interest (Rs.) |
Final amount (Rs.) |
| 1st | 16,000 | 800 | 16,800 |
| 2nd | ........... | ........... | ........... |
| 3rd | ........... | ........... | ........... |
| 4th | ........... | ........... | ........... |
| 5th | ........... | ........... | ........... |
A borrowed Rs. 2,500 from B at 12% per annum compound interest. After 2 years, A gave Rs. 2,936 and a watch to B to clear the account. Find the cost of the watch.
How much will Rs. 50,000 amount to in 3 years, compounded yearly, if the rates for the successive years are 6%, 8% and 10% respectively?
6000 workers were employed to construct a river bridge in four years. At the end of first year, 20% workers were retrenched; At the end of second year 5% of the workers at that time were retrenched. However, to complete the project in time, the number of workers was increased by 15% at the end of third year. How many workers were working during the fourth year?
