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.

Q:

The usual average speed of a car on a particular stretch of road is 75 km/hr. On a particular day, the average speed was 12% less than the usual, as a result of which the time taken was I S minutes more.


How long is the stretch of road, in kilometres?

 

A) 155 B) 176
C) 165 D) 150
 
Answer & Explanation Answer: C) 165

Explanation:
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Q:

In an examination in which the full marks were 500, A scored 25% more marks than B, B scored 60% more marks than C and C scored 20% less marks than D. IfA scored 80% marks, then the percentage of marks obtained by is:

 

A) 65% B) 60%
C) 50% D) 54%
 
Answer & Explanation Answer: C) 50%

Explanation:
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0 87
Q:

Shaan has a total of ₹5,500 with him. He buys product ‘Z’ at ₹5,000 from this sum and then sells it to another person, thus making a profit of 15% onit. With all the money he has now, he buys product ‘X’ andthen sells it to another person making a profit of 25% onit.


What is the total money Shaan has now?

 

A) ₹7,812.50 B) ₹7,815.50
C) ₹6,325.50 D) ₹7,187.50
 
Answer & Explanation Answer: A) ₹7,812.50

Explanation:
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0 1139
Q:

If 5 cosθ-12 sinθ=0, then what is the value of frac{1 + sin theta + cos theta}{1 - sin theta + cos theta}

 

A) 54\frac{5}{4} B) 32\frac{3}{2}
C) 34\frac{3}{4} D) 52\frac{5}{2}
 
Answer & Explanation Answer: B) 32\frac{3}{2}

Explanation:
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0 48
Q:

Solve the below equation.

       1+221+(1+31

A) 94 B) 65
C) 214 D) 215
 
Answer & Explanation Answer: C) 214

Explanation:
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0 217
Q:

If A lies in third quadrant, and 20tanA=2120 tan A = 21, then the value of 5sinA-2cosA4cosA-57sinAfrac{5 sin A - 2 cos A}{4 cos A - frac{5}{7} sin A}

 

A) -6529\frac{-65}{29} B) 15\frac{1}{5}
C) 529\frac{5}{29} D) 1312\frac{13}{12}
 
Answer & Explanation Answer: B) 15\frac{1}{5}

Explanation:
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2 96
Q:

The sum of the squares of 3 natural numbers is 1029, and they are in the proportion 1 : 2 : 4. The difference between greatest number and smallest number is:

 

A) 15 B) 21
C) 31 D) 18
 
Answer & Explanation Answer: B) 21

Explanation:
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0 125
Q:

Two circles of radii 8 cm and 6 cm touch each other externally. The length of the direct common tangent is:

 

A) 13.86 B) 20
C) 10.12 D) 24
 
Answer & Explanation Answer: A) 13.86

Explanation:
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0 116