Quantitative Aptitude - Arithmetic Ability Questions

Q:

At 5% simple interest per annum a certain sum yields a total amount of Rs. 2,790 at the end of 3 1/4 years. The sum invested was

A) Rs. 2350 B) Rs. 2400
C) Rs. 2600 D) Rs. 2550
 
Answer & Explanation Answer: B) Rs. 2400

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Filed Under: Simple Interest
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Q:

Select the odd word/letters/number/number pair from the given alternatives.

A) Serious B) Severe
C) Harsh D) Deceptive
 
Answer & Explanation Answer: D) Deceptive

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Filed Under: Odd Man Out
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Q:

A boat covers a distance of 14 km upstream and 16 km downstream in 9 hours. It covers a distance of 12 km upstream and 40 km downstream in 11hours. What is the speed (in km/hr) of the boat in still water?

 

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

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Filed Under: Boats and Streams
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Q:

If cosA/(1 - sinA) = x, then the value of x is

A) secA - tanA B) cosecA + tanA
C) secA + tanA D) cosecA - tanA
 
Answer & Explanation Answer: C) secA + tanA

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Filed Under: Simplification
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Q:

Find the value of  x3 - y3, if x - y = 4 and xy = 12.

A) 198 B) 208
C) 218 D) 228
 
Answer & Explanation Answer: B) 208

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Filed Under: Simplification
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Q:

If 3.5x = 0.07y, then find the result of [y-x / y+x]

A) 51/49 B) 49/53
C) 49/51 D) 53/57
 
Answer & Explanation Answer: C) 49/51

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Q:

An army lost 10% of its men in war, 10% of the remaining died due to disease and 10% of the rest were declared disabled. Thus the strength of the army was reduced to 7,29,000 active men. The original strength of the army was

A) 1500000 B) 1000000
C) 1200000 D) 1100000
 
Answer & Explanation Answer: B) 1000000

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Filed Under: Simplification
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Q:

If the roots of the equation a(b  c)x2 + b(c  a)x + c(a  b) = 0 are equal, then which of the following is true?

A) b = ( a + c)/ ac B) 2/ b = (1/ a) + (1/ c)
C) 2 b = (1/ a) + (1/ c) D) abc = ab + bc + ca
 
Answer & Explanation Answer: B) 2/ b = (1/ a) + (1/ c)

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Filed Under: Simplification
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