17
Q:

At a certain rate of interest the compound interest of 3 years and simple interest of 5 years for certain sum of money is respectively Rs. 1513.2 and Rs. 2400. Find the common rate of interest per annum ?

A) 5% B) 6%
C) 4% D) 3%

Answer:   A) 5%



Explanation:

Given compound interest for 3 years = Rs. 1513.2

 

and simple interest for 5 years = Rs. 2400

 

Now, we know that  C.I = P1+R100n - 1

 

=> 1513.2 = P1+R1003 - 1 ...........(A)

 

And S.I = PTR/100

 

=> 2400 = P5R/100 ..................(B)

 

By solving (A) & (B), we get

 

R = 5%.

Q:

₹ 10000, invested at 30% rate of interest per annum. but compounded every four months, will give an amount of ₹ ...... in one year.

 

A) 13270 B) 13000
C) 13300 D) 13310
 
Answer & Explanation Answer: D) 13310

Explanation:
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0 141
Q:

The compound interest on a certain sum at the end of two years is Rs.408. The simple interest on the same sum for the same time is Rs.400. The rate of interest per annum is:

 

 

A) 2% B) 80%
C) 40% D) 8%
 
Answer & Explanation Answer: A) 2%

Explanation:
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0 63
Q:

Rs 10000 is kept at compound interest at an interest rate of 18% per annum (compounding annually). If the compounding of interest is done half yearly, then how much more interest (in Rs) will be obtained?

 

A) 243 B) 324
C) 81 D) 162
 
Answer & Explanation Answer: C) 81

Explanation:
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3 134
Q:

A sum of Rs 6000 is borrowed at compound interest at the rate of 8% per annum. What will be the amount (in Rs) after 2 years?

 

A)  6998.4 B) 6960
C) 6784.4 D) 6869.4
 
Answer & Explanation Answer: A)  6998.4

Explanation:
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0 187
Q:

What is the difference (in Rs) between the compound interest (compounded annually) and simple interest for 3 years on a principal of Rs 2500 at the rate of 30% per annum?

A) 742.5 B) 624.5
C) 714.5 D) 825.25
 
Answer & Explanation Answer: A) 742.5

Explanation:
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3 236
Q:

Find the interest on Rs.25000 at 12% p.a compounded annually for 3 years.

 

A) 9,000 B) 9,833.40
C) 10,123.20 D) 10,678.90
 
Answer & Explanation Answer: C) 10,123.20

Explanation:
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0 384
Q:

Find the compound interest to the nearest rupee on Rs.7500 for 2 years 4 months at 12% p.a. reckoned manually?

A) 2284 B) 2176
C) 2097 D) 2235
 
Answer & Explanation Answer: A) 2284

Explanation:
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3 233
Q:

A sum of Rs 2500 becomes Rs 8100 in 2 years at a certain rate of compound interest. What will be the sum (in Rs) after 4 years?

 

A) 29824 B) 36284
C) 41624 D) 26244
 
Answer & Explanation Answer: D) 26244

Explanation:
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0 333