Quantitative Aptitude - Arithmetic Ability Questions

Q:

What is the difference (in Rs) in Compound interest earned in 1 year on a sum of Rs 10,000 at 40% per annum compounded quarterly and annually?

A) 461 B) 346
C) 463 D) 641
 
Answer & Explanation Answer: D) 641

Explanation:
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Q:

If a merchant offers a discount of 30% on the list price, then he makes a loss of 16%. What % profit or % loss will he make if he sells at a discount of 20% of the list price?

A) 14 percent profit B) 4 percent loss
C) 26 percent profit D) 8 percent profit
 
Answer & Explanation Answer: B) 4 percent loss

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Q:

A cube is placed inside a cone of radius 20 cm and height 10 cm, one of its face being on the base of the cone and vertices of opposite face touching the cone. What is the length (in cm) of side of the cube?

A) 5 B) 6
C) 8 D) 9
 
Answer & Explanation Answer: C) 8

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Q:

James present age is 2/7th of his fathers present age. James brother is three year older to Jame. The respective ratio between present ages of James father and James brother is 14:5. What is the present age of James?

A) 12 years B) 13 years
C) 14 years D) 15 years
 
Answer & Explanation Answer: A) 12 years

Explanation:

James father present age = x
James age = 2/7 x
James brother age = 2x/7 + 3
x = 42
=> 2x/7 = 12 yrs

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Filed Under: Problems on Ages
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Q:

A box contains 5 green, 4 yellow and 3 white marbles. Threemarbles are drawn at random. What is the probability thatthey are not of the same colour ?

A) 40/44 B) 44/41
C) 41/44 D) 40/39
 
Answer & Explanation Answer: C) 41/44

Explanation:

n(E) = 5C3 + 4C3 + 3C3 = 10 + 4 + 1 = 15n(S) = 12C3 = 220

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Filed Under: Permutations and Combinations
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Q:

Priya's marks in History and Geography are in the ratio 5 : 7. If she got 14 marks more in Geography than in History, what are her History marks?

A) 49 B) 42
C) 56 D) 35
 
Answer & Explanation Answer: D) 35

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Filed Under: Ratios and Proportions
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Q:

When a discount of 20% is given on an African safari ticket, the profit is 43%. If the discount is 28%, then the profit is

A) 71 percent B) 113.3 percent
C) 13.6 percent D) 28.7 percent
 
Answer & Explanation Answer: D) 28.7 percent

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Q:

Raghu has invested Rs. 1000 and received Rs. 1300 at 6% per annum simple interest after X years. Find thevalue of X.

A) 4 years B) 3 years
C) 2 years D) 5 years
 
Answer & Explanation Answer: D) 5 years

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