Aptitude and Reasoning Questions

Q:

If the radius of a circle is increased by 25%, its area increases by:

A) 50 percent B) 25 percent
C) 28.125 percent D) 56.25 percent
 
Answer & Explanation Answer: D) 56.25 percent

Explanation:
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Exam Prep: Bank Exams

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Q:

Sairam spent Rs. 38460 on the renovation of his home and Rs. 24468 on buying TV set and remained with 28% of the total amount. What was the total amount?

A) Rs. 87400 B) Rs. 68700
C) Rs. 74000 D) Rs. 94060
 
Answer & Explanation Answer: A) Rs. 87400

Explanation:

Let the total amount he had with = Rs. p

From the given data,

p - 38460 - 24468 = 28p/100

p - 28p/100 = 24468 + 38460

72p/100 = 62928

72p = 62928 x 100

p = 62928 x 100/72

p = 87400

 

Hence, the total amount he had = p = Rs. 87400.

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Filed Under: Percentage
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Q:

If 25% of X is equal to 40% of Y, then what is the ratio of X and Y?

A) 8 : 5 B) 5 : 3
C) 9 : 5 D) 4 : 5
 
Answer & Explanation Answer: A) 8 : 5

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams , CAT

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Q:

6 divided by 2(1 + 2) =

A) 1 B) 0
C) 9 D) Can't be determined
 
Answer & Explanation Answer: C) 9

Explanation:

The given expression can be simplified as

÷ 2 (1 + 2)

The expression can be simplified further by the order of operations, using BODMAS rule.

 

First evaluate Parentheses/Brackets, then evaluate Exponents/Orders, then evaluate Multiplication-Division, and finally evaluate Addition-Subtraction.

 

Now, the expression becomes ÷ 2 (3)

 

According to the order of operations, division and multiplication have the same precedence, so the correct order is to evaluate from left to right. First take 6 and divide it by 2, and then multiply by 3.

6 ÷ 2 × 3

= 3 × 3

= 9

But not  6÷2×3 = 6 ÷ 6 = 1

Screenshot_(21)1528090844.jpg image 

 

Hence, 6 ÷ 2 (1 + 2) = 9.

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Q:

A student multiplied a number by 5/6 instead of 6/5. What is the percentage error in the calculation?

A) 44 percent B) 30.56 percent
C) 15.28 percent D) 22 percent
 
Answer & Explanation Answer: B) 30.56 percent

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Filed Under: Percentage
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Q:

A and B invest in a business in the ratio 2 : 5. If 50% of the total profit goes to charity and A's share is Rs 3.6 lakhs, the total profit is Rs __________ lakhs.

A) 12.6 B) 25.2
C) 37.8 D) 16.8
 
Answer & Explanation Answer: B) 25.2

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Filed Under: Partnership
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Q:

Factors of 48x3- 8x2- 93x- 45 are

A) (4x + 3)(4x ­- 3)(3x ­- 5) B) (4x -­ 3)(4x -­ 3)(3x-­ 5)
C) (4x + 3)(4x + 3)(3x -­ 5) D) (4x -­ 3)(4x + 3)(3x + 5)
 
Answer & Explanation Answer: C) (4x + 3)(4x + 3)(3x -­ 5)

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

A, B and C are three students. A got 36% less marks than B and 16% more marks than C. If B got 145 marks, then what are the marks got by C?

A) 120 B) 110
C) 80 D) 75
 
Answer & Explanation Answer: C) 80

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