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 value of 1+tan2(1-sin2) is

A) 2 B) 1
C) -1 D) -2
 
Answer & Explanation Answer: B) 1

Explanation:
Report Error

View Answer Report Error Discuss

0 856
Q:

In ABC, A + B = 75 and B + C = 140, then B = 

A) 40 B) 35
C) 55 D) 45
 
Answer & Explanation Answer: B) 35

Explanation:
Report Error

View Answer Report Error Discuss

0 811
Q:

An exterior angle of a triangle is 115 deg and one of the interior opposite angle is 45 deg. Then the other two angles are

A) 65, 70 B) 60, 75
C) 70, 60 D) 55, 60
 
Answer & Explanation Answer: A) 65, 70

Explanation:
Report Error

View Answer Report Error Discuss

0 660
Q:

The salary of a person is reduced by 20% . To restore the previous salary, his present salary is to be increased by

A) 20% B) 25%
C) 17.5% D) 22.5%
 
Answer & Explanation Answer: B) 25%

Explanation:
Report Error

View Answer Report Error Discuss

0 844
Q:

The angles of depression of two ships from the top of a light house are 45° and 30° toward east. If the ships are 200m apart, the height of the light house is (take √3=1.73)

A) 273m B) 270m
C) 253m D) 263m
 
Answer & Explanation Answer: A) 273m

Explanation:
Report Error

View Answer Report Error Discuss

0 933
Q:

A sum of Rs. 3000 amounts to Rs. 6000 in two years at compound interest. The interest for four years is

A) Rs.9000 B) Rs.12000
C) Rs.6000 D) Rs.3000
 
Answer & Explanation Answer: A) Rs.9000

Explanation:
Report Error

View Answer Report Error Discuss

0 1040
Q:

If cosA + cos2A = 1 then the value of sin2A + sin4A is

A) 1/2 B) 1/4
C) 1 D) 0
 
Answer & Explanation Answer: C) 1

Explanation:
Report Error

View Answer Report Error Discuss

0 920
Q:

If the measures of the angles of a triangle are in the ratio. 1:2:3 and if the length of the smallest side of the triangle is 10cm, then the length of the longest side is

A) 20cm B) 22cm
C) 24cm D) 18cm
 
Answer & Explanation Answer: A) 20cm

Explanation:
Report Error

View Answer Report Error Discuss

0 978