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Simple Interest and Compound Interest

Q.No: 1
Test Name : CAT 2018 Actual Paper Slot 1

John borrowed Rs. 2,10,000 from a bank at an interest rate of 10% per annum, compounded annually. The loan was repaid in two equal instalments, the first after one year and the second after another year. The first instalment was interest of one year plus part of the principal amount, while the second was the rest of the principal amount plus due interest thereon. Then each instalment, in Rs., is

Solution:
Q.No: 2
Test Name : CAT 2018 Actual Paper Slot 2

Gopal borrows Rs. X from Ankit at 8% annual interest. He then adds Rs. Y of his own money and lends Rs. X+Y to Ishan at 10% annual interest. At the end of the year, after returning Ankit’s dues, the net interest retained by Gopal is the same as that accrued to Ankit. On the other hand, had Gopal lent Rs. X+2Y to Ishan at 10%, then the net interest retained by him would have increased by Rs. 150. If all interests are compounded annually, then find the value of X + Y.

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Q.No: 3
Test Name : CAT 2019 Actual Paper Slot 1

A person invested a total amount of Rs 15 lakh. A part of it was invested in a fixed deposit earning 6% annual interest, and the remaining amount was invested in two other deposits in the ratio 2 : 1, earning annual interest at the rates of 4% and 3%, respectively. If the total annual interest income is Rs 76000 then the amount (in Rs lakh) invested in the fixed deposit was

Solution:
Q.No: 4
Test Name : CAT 2019 Actual Paper Slot 2

Amal invests Rs 12000 at 8% interest, compounded annually, and Rs 10000 at 6% interest, compounded semi-annually, both investments being for one year. Bimal invests his money at 7.5% simple interest for one year. If Amal and Bimal get the same amount of interest, then the amount, in Rupees, invested by Bimal is

Solution:
Q.No: 5
Test Name : CAT 2019 Actual Paper Slot 2

A cyclist leaves A at 10 am and reaches B at 11 am. Starting from 10:01 am, every minute a motor cycle leaves A and moves towards B. Forty-five such motor cycles reach B by 11 am. All motor cycles have the same speed. If the cyclist had doubled his speed, how many motor cycles would have reached B by the time the cyclist reached B?

A
23
B
20
C
15
D
22
Solution:
Since 45 motor cycles reach point B and 11 pm, the last motorcycle must have left at 10 : 45 and reached by 11 pm. So the whole journey takes 15 minutes to cover by motor cycle.
If cyclist doubles his speed, he will reach point B in 30 minutes. Since motorcycle takes 15 minutes to cover the distance, the first motorcycle reaches at 10 : 16 and in total 15 motor cycles would reach by when B reached.
Q.No: 6
Test Name : CAT Actual Paper 2020 Slot-1

Veeru invested Rs 10000 at 5% simple annual interest, and exactly after two years, Joy invested Rs 8000 at 10% simple annual interest. How many years after Veeru’s investment, will their balances, i.e., principal plus accumulated interest, be equal?

Solution:
Q.No: 7
Test Name : CAT Actual Paper 2020 Slot-2

For the same principal amount, the compound interest for two years at 5% per annum exceeds the simple interest for three years at 3% per annum by Rs 1125. Then the principal amount in rupees is

Solution:
Q.No: 8
Test Name : CAT Actual Paper 2020 Slot-3

A person invested a certain amount of money at 10% annual interest, compounded half-yearly. After one and a half years, the interest and principal together became Rs 18522. The amount, in rupees, that the person had invested is

Solution:
Q.No: 9
Test Name : CAT Actual Paper 2021 Slot-1

Anil invests some money at a fixed rate of interest, compounded annually. If the interests accrued during the second and third year are Rs. 806.25 and Rs. 866.72, respectively, the interest accrued, in INR, during the fourth year is nearest to

A
931.72
B
926.84
C
929.48
D
934.65
Solution:
Q.No: 10
Test Name : CAT Actual Paper 2021 Slot-3

Bank A offers 6% interest rate per annum compounded half yearly. Bank B and Bank C offer simple interest but the annual interest rate offered by Bank C is twice that of Bank B. Raju invests a certain amount in Bank B for a certain period and Rupa invests ₹ 10,000 in Bank C for twice that period. The interest that would accrue to Raju during that period is equal to the interest that would have accrued had he invested the same amount in Bank A for one year. The interest accrued, in INR, to Rupa is

A
1436
B
2346
C
2436
D
3436
Solution:
Q.No: 11
Test Name : CAT Actual Paper 2022 Slot-1

Alex invested his savings in two parts. The simple interest earned on the first part at 15% per annum for 4 years is the same as the simple interest earned on the second part at 12% per annum for 3 years. Then, the percentage of his savings invested in the first part is

A
62.5%
B
40%
C
60%
D
37.5%
Solution:
Q.No: 12
Test Name : CAT Actual Paper 2022 Slot-2

Mr. Pinto invests one-fifth of his capital at 6%, one-third at 10% and the remaining at 1%, each rate being simple interest per annum. Then, the minimum number of years required for the cumulative interest income from these investments to equal or exceed his initial capital is

Solution:
Q.No: 13
Test Name : CAT Actual Paper 2022 Slot-3

Nitu has a an initial capital of Rs. 20,000. Out of this, she invests Rs. 8,000 at 5.5% in bank A, Rs. 5,000 at 5.6% in bank B and the remaining amount at x% in bank C, each rate being simple interest per annum. Her combined annual interest income from these investments is equal to 5% of the initial capital. If she had invested her entire initial capital in bank C alone, then her annual interest income, in rupees, would have been

A
700
B
800
C
1000
D
900
Solution:
Q.No: 14
Test Name : CAT Actual Paper 2023 Slot 1

Anil invests Rs. 22000 for 6 years in a certain scheme with 4% interest per annum, compounded half-yearly. Sunil invests in the same scheme for 5 years, and then reinvests the entire amount received at the end of 5 years for one year at 10% simple interest. If the amounts received by both at the end of 6 years are same, then the initial investment made by Sunil, in rupees, is

Solution:
Q.No: 15
Test Name : CAT Actual Paper 2023 Slot 2

Anil borrows Rs. 2 lakhs at an interest rate of 8% per annum, compounded half-yearly. He repays Rs. 10320 at the end of the first year and closes the loan by paying the outstanding amount at the end of the third year. Then, the total interest, in rupees, paid over the three years is nearest to

A
40991
B
33130
C
45311
D
51311
Solution:
Q.No: 16
Test Name : CAT Actual Paper 2023 Slot 2

If a certain amount of money is divided equally among n persons, each one receives Rs. 352. However, if two persons receive Rs. 506 each and the remaining amount is divided equally among the other persons, each of them receive less than or equal to Rs. 330. Then, the maximum possible value of n is

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Since 45 motor cycles reach point B and 11 pm, the last motorcycle must have left at 10 : 45 and reached by 11 pm. So the whole journey takes 15 minutes to cover by motor cycle.
If cyclist doubles his speed, he will reach point B in 30 minutes. Since motorcycle takes 15 minutes to cover the distance, the first motorcycle reaches at 10 : 16 and in total 15 motor cycles would reach by when B reached.


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