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Q:

A mixture contains acid and water in the ratio of 7 : 3. If 4 litres of water is added to it, then the ratio of acid and water becomes 7 : 4. What is the quantity (in litres) of acid in the mixture?

 

A) 28 B) 22
C) 20 D) 32
 
Answer & Explanation Answer: A) 28

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Filed Under: Alligation or Mixture
Exam Prep: Bank Exams

Q:

The income of S, T and U are in the ratio of 7 : 9 : 6 and their expenses in the ratio of 4 : 5 : 3. If S saves Rs 2000 out of an income of Rs 14000, then what will be the saving (in Rs) of T?

A) 2400 B) 1500
C) 3000 D) 2000  
 
Answer & Explanation Answer: C) 3000

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

Q:

Weight of A and B are in the ratio 11 : 8. A’s weight increases by 40% and the total weight of A and B increases by 30%. What is the percentage increase in the B’s weight?

 

 

 

 

A) 10.25 B) 16.25
C) 12.5 D) 18.75
 
Answer & Explanation Answer: B) 16.25

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Filed Under: Percentage
Exam Prep: Bank Exams

Q:

Calculate the value of ∡OBC + ∡BAC, if O is the circum-center of the triangle ABC inscribed in the circle.

 

 

 

A) 60 deg B) 90 deg
C) 120 deg D) 130 deg
 
Answer & Explanation Answer: B) 90 deg

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

Q:

If the length of the transverse tangent is 8 cm, then calculate the centre distance (in cm) of the two circles with radii 7 cm and 3 cm.

 

A) √100 B) √120  
C) √164   D) √180
 
Answer & Explanation Answer: C) √164  

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Filed Under: Area
Exam Prep: Bank Exams

Q:

If x32 - 1x16 = 5, then find the value of x96 - 1x48.

 

 

A) 40 B) 70
C) 140 D) 180
 
Answer & Explanation Answer: C) 140

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Filed Under: Simplification
Exam Prep: Bank Exams

Q:

If (57)4x. (75)3x-1 = (75)6, then find the value of x which satisfies the equation.

 

A) -1 B) -7
C) 1 D) 7
 
Answer & Explanation Answer: B) -7

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Filed Under: Simplification
Exam Prep: Bank Exams

Q:

Calculate the value of (59881 × 59881 - 49681 × 49681)10200?

 

A) 110956 B) 109562
C) 109652 D) 109662
 
Answer & Explanation Answer: B) 109562

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Filed Under: Simplification
Exam Prep: Bank Exams