0
Q:

What is the compound interest earned at the end of 3 years?

I. Simple interest earned on that amount at the same rate and for the same period is Rs. 4500.

II.The rate of interest is 10 p.c.p.a.

III.Compound interest for 3 years is more than the simple interest for that period by Rs.465.

A) I and II only B) II and III only
C) I and III only D) Either II or III only

Answer:   D) Either II or III only



Explanation:

 

 

 

 

 

 

I. gives, S.I for 3 years = Rs. 4500.

 

 

 

II. gives, Rate = 10% p.a.

 

 

 

III. gives, (C.I.) - (S.I.) = Rs. 465.

 

 

 

Clearly, using I and III we get C.I. = Rs. (465 + 4500).

 

 

 

Thus, II is redundant.

 

 

 

Also, from I and II, we get sum =

 

 

 

100 x 4500

 

 

 

= 15000.

 

 

 

10 x 3

 

 

 

Now C.I. on Rs. 15000 at 10% p.a. for 3 years may be obtained.

 

 

 

Thus, III is redundant.

 

 

 

Either II or III is redundant.

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If after giving a discount of 18%, a book is sold for Rs 1599, then what will be the marked price (in Rs) of the book?

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C) 1950 D) 2000
 
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If 1+y16-74, then the value of 5y-15

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C) 150 D) 160
 
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A farmer's land is in the shape of a trapezium which has its parallel sides measuring 2.56 yards and 3.44 yards and the distance between the parallelsides in 1.44 yards. The cost of ploughing the land is Rs 1800 per square yard. What amount will (in Rs) have to be spent in order to plough the entire land?

A) 3672 B) 6732
C) 7776 D) 8214
 
Answer & Explanation Answer: C) 7776

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Find the difference between place value and face value of 7 in 589573212.

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C) 69993 D) 699993
 
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The surface area (in sq.cm.) of a sphere with radius 1 cm is :(pi = 22/7)

A) 89/7 B) 89/21
C) 88/21 D) 88/7
 
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A shop keeper cheats to the extent of 10% while buying and selling fruits, by using tampered weights. His total gain, in %, is:

A) 21 B) 24
C) 22 D) 23
 
Answer & Explanation Answer: A) 21

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Mr. Murthy invested Rs. 16,000 in a scheme. How much will he get on matuirity, if he invested it at 20% per annum C.I. for 9 months, compounded quarterly?

A) Rs. 18523 B) Rs. 18521
C) Rs. 18524 D) Rs. 18522
 
Answer & Explanation Answer: D) Rs. 18522

Explanation:
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