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20 GRE Simple & Compound Interest Questions (All Possible Q’s to appear on the Exam)

In this post, you will come across all the possible Simple and Compound Interest questions that are likely to show up on the GRE exam.

Question 1

Kim invested $2,000 for 3 years at 8% annual interest rate that was compounded annually. How much loss would have Kim suffered if he had invested that money for 3 years at 8% simple annual interest?

Give your answer to the nearest integer.

$39

Question 2

Josh invested $X in a special savings account that paid simple interest. The amount grew to $4,000 after 2 years. Josh then waited for another 3 years and got a final amount of $7,000. At what annual interest rate did Josh invest $X initially?

A) 10%
B) 20%
C) 25%
D) 35%
E) 50%

E

Question 3

What is the least number of full years that it would take $X invested at 20% annual interest rate, compounded annually, to more than double itself?

4

Question 4

Karen invested $42,000 for one quarter in a bank account that paid simple annual interest rate of x percent. If Karen earned $420 for the quarter, what is the value of x?

A) 3
B) 5
C) 4
D) 4.5
E) 5

C

Question 5

The annual rate of interest earned by an investment of $P increased by 20% from 2019 to 2020. If the annual rate of interest earned in 2020 was 36%, what was the annual rate of interest for 2019?

A) 10%
B) 16%
C) 20%
D) 30%
E) 44%

D

Question 6

If $1,000 is invested at 15 percent annual interest, compounded semiannually, what is the approximate balance after 1 year

A) $1,350
B) $1,320
C) $1,300
D) $1,200
E) $1,150

E

Question 7

Mark made a deposit of $8,000 at 6% simple annual rate of interest. He also deposited another $10,000 at 8% annual rate of interest that was compounded half yearly. What was the total amount of interest that Mark earned from these two deposits after 1 year?

A) $1,200
B) $1,280
C) $1,296
D) $2,080
E) $2,144

C

Question 8

$1,000 is deposited in a bank account at a simple interest rate of 12% per annum.

Quantity A: Value of the deposit after 5 months

Quantity B: $1,060

A) Quantity A is greater.

B) Quantity B is greater.

C) The two quantities are equal.

D) The relationship cannot be determined from the information given.

B

Question 9

An investment of $X is made in a bond at an annual interest rate of 4%, compounded semiannually. Find the minimum value of X such that the investment is at least $2,000 at the end of 2 years?

A) $1,840
B) $1,845
C) $1,847
D) $1,848
E) $1,850

D

Question 10

On a certain date, Pat invested $X in Panda account at a simple annual interest rate of 2.5 percent. On the same date, he invested another $Y in Zebra account at a simple annual interest rate of 1.5 percent. The sum of the amounts that he invested in the two accounts was $6,400. If each investment earned him the same interest after two years, what was his average rate of interest from the two investments?

A) 3.5%
B) 3.75%
C) 4%
D) 4.25%
E) 4.5%

B

Question 11

An investor aims at earning an interest of at least $1,000 on a principal amount of $10,000. If the money is invested for one year at annual interest rate that is compounded every 6 months, then what is the minimum annual interest rate that is needed to make at least $1,000?

A) 9.2%
B) 9.4%
C) 9.6%
D) 9.8%
E) 10%

D

Question 12

On a certain date, Pat invested $X in Panda account at a simple annual interest rate of 10 percent. On the same date, he invested another $Y in Zebra account at a simple annual interest rate of 8 percent. The sum of the amounts that he invested in the two accounts was $3,000. If the interest earned at the end of the year from these investments was $256, how much did Pat invest at 10 percent?

$800

Question 13

Alex invested $10,000 that earned 4% interest per annum, compounded quarterly. How much money did Alex earn 6 months after the investment?

A) $400
B) $201
C) $200
D) $101
E) $100

B

Question 14

Josh earned 4% interest per year, compounded annually, for 10 years on an initial investment of $X. By the end of the first two years, his investment had grown to $4,160.

Quantity A: Interest earned by Josh in the third year

Quantity B: $166

A) Quantity A is greater.

B) Quantity B is greater.

C) The two quantities are equal.

D) The relationship cannot be determined from the information given.

A

Question 15

Josh earned 4% interest per year, compounded annually, for 10 years on an initial investment of $X. By the end of the first two years, his investment had grown to $4,160. The interest earned by Josh in the third year was how much greater than the interest that he earned in the second year?

A) $5.2
B) $5.7
C) $6.3
D) $6.4
E) $7.1

D

Question 16

Max invested $A into a brokerage account that earned 16% interest per annum, compounded semiannually. 6 months later Max invested another $A into the same brokerage account. If the account contained $B after 1 year, which of the following expresses A in terms of B?

A) B/2.426112
B) B/2.2464
C) B/2.40
D) B/2.24
E) B/2.04

B

Question 17

Brock deposited $5,000 at 6 percent simple annual interest and $10,000 at y percent simple annual interest. The total amount of interest earned by the two deposits in one year was $900.

Quantity A: y

Quantity B: 6

A) Quantity A is greater.

B) Quantity B is greater.

C) The two quantities are equal.

D) The relationship cannot be determined from the information given.

C

Question 18

If Sam invests $10,000 for one year at x percent simple annual interest, he will earn $1,000. How much should Sam invest at y% simple annual interest for one year to earn $1,500 where y=0.6x?

$25,000

Question 19

If Josh invests in Type A bond at x% annual interest, compounded semiannually, then his investment will triple in 40/x years. What will be Josh’s investment worth after 24 years if he invested $1,000 in Type A bond at 5% annual interest, compounded semiannually?

$27,000

Question 20

Amber had $100,000 in savings. She used $X from her savings to purchase a car. From her remaining savings, she spent 1/3 to buy a certificate of deposit at 4% simple annual rate of interest and 2/3 of it to buy another certificate of deposit at 6% simple annual rate of interest. If she earned a total of $320 from her two certificates after one year, for how much did she purchase the car?

A) $96,000
B) $94,000
C) $88,000
D) $75,000
E) $40,000

B

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