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 Simple Interest Questions

Popular Latest Rated Important Formulae

FACTS  AND  FORMULAE  FOR  SIMPLE  INTEREST  QUESTIONS

 

 

1. Principal: The money borrowed or lent out for a certain period is called the principal or the sum.

 

2. Interest: Extra money paid for using other's money is called interest

 

3. Simple Interest (S.I.) : If the interest on a sum borrowed for a certain period is reckoned uniformly, then it is called simple interest.

Let Principal = P, Rate = R% per annum (p.a.) and Time = T years. Then,

(i)  S.I=P×T×R100

(ii)  P=100×S.IR×T ; R=100×S.IP×T and T=100×S.IP×R

Q:

A sum of money (P) doubles in 10 years. How much would it be in 20 years at the same rate of simple interest?

A) P B) 2P
C) 3P D) 4P
 
Answer & Explanation Answer: C) 3P

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2 1429
Q:

Deepinder lent Rs 8200 to Jairaj for 16 years and Rs 4900 to Karna for 15 years on simple interest at the same rate of interest and received Rs 19446.5 in all from both of them as interest. The rate of interest per annum is:

A) 10 percent B) 10.5 percent
C) 9.5 percent D) 11 percent
 
Answer & Explanation Answer: C) 9.5 percent

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4 1424
Q:

The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 9% per annum is Rs 405. The sum is ______ .

A) Rs 50000 B) Rs 100000
C) Rs 200000 D) Rs 150000
 
Answer & Explanation Answer: A) Rs 50000

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0 1420
Q:

If a sum of money doubles itself in 8 yrs, then the interest rate in percentage is ?

A) 8 1⁄2% B) 10%
C) 10 1⁄2 % D) 12 1⁄2 %
 
Answer & Explanation Answer: D) 12 1⁄2 %

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2 1413
Q:

There is 40% increase in an amount in 8 years at simple interest. What will be the compound interest of Rs. 10000 after 3 years at the same rate?

A) Rs 1576.25 B) Rs 6305
C) Rs 7881.25 D) Rs 4728.75
 
Answer & Explanation Answer: A) Rs 1576.25

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4 1413
Q:

A sum of Rs 800 becomes Rs 1000 in 2 years at simple interest. What is the per annum rate of interest (in percent)?

 

A) 12.5   B)  25  
C)  8.5   D)  17
 
Answer & Explanation Answer: A) 12.5  

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3 1411
Q:

If in 2 years at simple interest the principal increases by 18%, what will be the compound interest (in Rs) earned on Rs 7000 in 3 years at the same rate?

A) 1865.2 B) 2065.2
C) 1965.2 D) 1765.2
 
Answer & Explanation Answer: B) 2065.2

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1 1402
Q:

There is 40% increase in an amount in 10 years at simple interest. What will be the compound interest of Rs 25000 after 2 years at the same rate?

A) Rs 4080 B) Rs 5100
C) Rs 3060 D) Rs 2040
 
Answer & Explanation Answer: D) Rs 2040

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