Quantitative Aptitude - Arithmetic Ability Questions

Q:

If [2(4x/5 - 3/4)]/3 - 5/3 = -1/6, then the value of x is?

A) 4/15 B) -15/4
C) -4/15 D) 15/4
 
Answer & Explanation Answer: D) 15/4

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Q:

The average age of eight teachers in a school is 40 years. A teacher among them died at the age of 55 years whereas another teacher whose age was 39 years joins them. The average age of the teachers in the school now is (in years)

A) 35 B) 36
C) 38 D) 39
 
Answer & Explanation Answer: C) 38

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Filed Under: Problems on Ages
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Q:

If after giving a discount of 18%, a book is sold for Rs 1599, then what will be the marked price (in Rs) of the book?

A) 1800 B) 1880
C) 1950 D) 2000
 
Answer & Explanation Answer: C) 1950

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Q:

Find the least number which must be subtracted from 18265 to make it a perfect square

A) 30 B) 38
C) 40 D) 45
 
Answer & Explanation Answer: C) 40

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Q:

What is the value of (cosecA - cotA) / (secA + tanA)?

A) (secA + tanA)/(cosecA - cotA) B) √[(secA - tanA)/(cosecA + cotA)]
C) (secA - tanA)/(cosecA + cotA) D) √[(secA + tanA)/(cosecA - cotA)]
 
Answer & Explanation Answer: C) (secA - tanA)/(cosecA + cotA)

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Q:

The value of Cot17°Cot73°Cos222° + 1Cot17°Sec268° is

A) 0 B) 1
C) 2 D) √3
 
Answer & Explanation Answer: B) 1

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Q:

If 25% of an electricity bill is deducted, Rs 1788 is still to be paid. How much was the bill?

A) Rs 1430 B) Rs 2420
C) Rs 1466 D) Rs 2384
 
Answer & Explanation Answer: D) Rs 2384

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Q:

What is the area (in sq cm) of a rhombus if the lengths of the diagonals are 12 cm and 14 cm?

A) 42 B) 168
C) 84 D) 63
 
Answer & Explanation Answer: C) 84

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