3
Q:

Question :

What is the sum which earned interest ?

Statements :

a. The total simple interest was Rs. 9000 after 9 years.
b. The total of sum and simple interest was double of the sum after 6 years.

A) Only a is sufficient B) Neither a nor b is sufficient
C) Only b is sufficient D) Both a and b sufficient

Answer:   D) Both a and b sufficient



Explanation:

Let the sum be Rs. x

a. gives, S.I = Rs. 9000 and time = 9 years.

b. gives, Sum + S.I for 6 years = 2 x Sum

--> Sum = S.I for 6 years.


Now, S.I for 9 years = Rs. 9000

S.I for 1 year = Rs. 9000/9 = Rs. 1000.

S.I for 6 years = Rs. (1000 x 6)= Rs. 6000.

--> x = Rs. 6000

Thus, both a and b are necessary to answer the question.

Subject: Simple Interest
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Q:

For what sum will the simple interest at R% for 2 years will be R?

A) 100/2R B) 50/R
C) 100/R D) 200/R
 
Answer & Explanation Answer: C) 100/R

Explanation:
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0 774
Q:

Alipta got some amount of money from her father. In how many years will the ratio of the money and the interest obtained from it be 10:3 at 6% simple interest per annum?

A) 7 years B) 3 years
C) 5 years D) 4 years
 
Answer & Explanation Answer: C) 5 years

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3 683
Q:

A sum of Rs. 1200 is lent to be paid back in 5 equal annual installments of Rs. 264 each. The rate of interest per annum is

A) 6% B) 8%
C) 2% D) 4%
 
Answer & Explanation Answer: C) 2%

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3 965
Q:

The rate of simple interest per annum at which a sum of money double itself in 16 2/3 yrs is

A) 4% B) 5%
C) 6% D) 6.5%
 
Answer & Explanation Answer: C) 6%

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1 989
Q:

The rate of simple interest per annum at which a sum of money double itself in 162⁄3 yrs. is

A) 4% B) 5%
C) 6% D) 6 2/3%
 
Answer & Explanation Answer: C) 6%

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1 639
Q:

The sum of money that will yield Rs. 60 as simple interest at 6% per annum in 5 years is

A) 200 B) 225
C) 175 D) 300
 
Answer & Explanation Answer: A) 200

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1 1141
Q:

An equal sum is invested in two different schemes. One scheme gives simple interest and the other gives compound interest (annual compounding). The sum of interest obtained after 2 years from both the schemes is Rs 2961. If both schemes have 23% per annum interest rate, then what is the first year interest (in Rs)of simple interest scheme?

A) 500 B) 1100
C) 700 D) 900
 
Answer & Explanation Answer: C) 700

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3 960
Q:

A sum becomes Rs 1392 in 2 years and Rs 1488 in 3 years at simple interest. What is the rate (in percentage) of interest per annum?

A) 8 B) 10
C) 12 D) 8.5
 
Answer & Explanation Answer: A) 8

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