Advertisements
Advertisements
Question
The maturity value of an R.D. Account is ₹ 16176. If the monthly instalment is ₹ 400 and the rate of interest is 8%; find the time (period) of this R.D Account.
Advertisements
Solution
Installment per month (P) = Rs. 400
Number of months (n) = n
Let rate of interest (r) = 8% p.a.
∴ `S.I. = P xx (n(n + 1))/(2 xx 12) xx r/100`
= `400 xx (n(n + 1))/24 xx 8/100`
= Rs. `(4n(n + 1))/3`
Maturity value = Rs. (400 × n) + Rs. `(4n(n + 1))/3`
Given maturity value = Rs. 16,176
Then Rs. (400 × n) + Rs. `(4n(n + 1))/3` = Rs. 16,176
⇒ 1200n + 4n2 + 4n = Rs. 48,528
⇒ 4n2 + 1204n = Rs. 48,528
⇒ n2 + 301n – 12132 = 0
⇒ (n + 337)(n – 36) = 0
⇒ n = –337 or n = 36
Then number of months = 36 months
= 3 years
APPEARS IN
RELATED QUESTIONS
Manish opens a Recurring Deposit Account with the Bank of Rajasthan and deposits Rs. 600 per month for 20 months. Calculate the maturity value of this account, if the bank pays interest at the rate of 10% per annum.
Given below are the entries in a saving Bank A/C pass book:
| Date | Particulars | Withdrawals | Deposits | Balance |
| Feb 8 Feb 18 April 12 June 15 July 8 |
B/F To self By Cash To Self By Cash |
- Rs. 4,000 - Rs. 5,000 - |
- - Rs. 2,230 - Rs. 6,000 |
Rs. 8,500 4500 6730 1730 7730 |
Calculate the interest for 6 months from February to July at 6% per annum.
Mr. Punjwanis saving account passbook had the following entries, The bank pays interest at 4.5°/o on all SB accounts. Find the amount received by Mr. Punjwani when he closed the acoount on 2S'h July 08.
| Date | Particulars | Withdrawls | Deposits | Balance |
| 05.01.2008 | By B/F | 24650.00 | ||
| 09.01.2008 | By cash | 14390.00 | 39040.00 | |
| 15.02.2008 | To Cheque | 7600.00 | 31440.00 | |
| 21.02.2008 | By Cheque | 8350.00 | 39790.00 | |
| 07.03.2008 | To Cash | 4000.00 | 35790.00 | |
| 31.03.2008 | By Interest | |||
| 08.04.2008 | By Cheque | 13670.00 | ||
| 12.04.2008 | To Cash | 6000.00 | ||
| 01.05.200 | By Cheque | 17350.00 | ||
| 16.06.2008 | By Cash | 9000.00 | ||
| 27.06.2008 | To Cash | 4370.00 | ||
| 04.07.2008 | By Cheque | 21320.00 | ||
| 11.07.2008 | To Cheque | 9460.00 | c |
Mrs. Chhabra deposits Rs 500 per month in a recurring deposit account for 4 years at a simple interest rate of 6% pa.
(a) Find the maturity value of deposit.
(b) Find the total interest she will earn after 2 years
Amit deposited Rs. 150 per month in a bank for 8 months under the Recurring Deposit Scheme. What will be the maturity value of his deposits, if the rate of interest is 8% per annum and interest is calculated at the end of every month?
A page from the Savings Bank Account of Mr. Prateek is given below:
| Date | Particulars | Withdrawals (in ₹) |
Deposits (in ₹) |
Balance (in ₹) |
| January 1st, 2006 | B/F | - | - | 1,270 |
| January 7th, 2006 | By Cheque | - | 2,310 | 3,580 |
| March 9th, 2006 | To Self | 2,000 | - | 1,580 |
| March 26th, 2006 | By Cash | - | 6,200 | 7,780 |
| June 10th, 2006 | To Cheque | 4,500 | - | 3,280 |
| July 15th, 2006 | By Clearing | - | 2,630 | 5,910 |
| October 18th, 2006 | To Cheque | 530 | - | 5,380 |
| October 27th, 2006 | To Self | 2,690 | - | 2,690 |
| November 3rd, 2006 | By Cash | - | 1,500 | 4,190 |
| December 6th, 2006 | To Cheque | 950 | - | 3,240 |
| December 23rd, 2006 | By Transfer | - | 2,920 | 6,160 |
If he receives ₹198 as interest on 1st January 2007, find the rate of interest paid by the bank.
Mrs. Kapoor opened a Savings Bank Account in State Bank of India on 9th January 2008. Her passbook entries for the year 2008 are given below:
| Date | Particulars | Withdrawals (in ₹) |
Deposits (in ₹) |
Balance (in ₹) |
| Jan. 9, 2008 | By cash | - | 10,000 | 10,000 |
| Feb. 12, 2008 | By cash | - | 15,500 | 25,500 |
| April 6, 2008 | To Cheque | 3,500 | - | 22,000 |
| April 30, 2008 | To Self | 2,000 | - | 20,000 |
| July 16, 2008 | By Cheque | - | 6,500 | 26,500 |
| August 4, 2008 | To Self | 5,500 | - | 21,000 |
| August 20, 2008 | To Cheque | 1,200 | - | 19,800 |
| Dec. 12, 2008 | By Cash | - | 1,700 | 21,500 |
Mrs. Kapoor closes the account on 31st December, 2008. If the bank pays interest at 4% per annum, find the interest Mrs. Kapoor receives on closing the account. Give your answer correct to the nearest rupee.
Shahrukh opened a Recurring Deposit Account in a bank and deposited Rs. 800 per month for `1 1/2` years. If he received Rs. 15,084 at the time of maturity, find the rate of interest per annum.
Suresh has a recurring deposit account in a bank. He deposits ₹ 2000 per month and the bank pays interest at the rate of 8% per annum. If he gets ₹ 1040 as interest at the time of maturity, find in years total time for which the account was held.
A man gets ₹ 1,404 as interest at the end of one year. If the rate of interest is 12% per annum in R.D. account, the monthly instalment is ______.
