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Q:

Mayur can complete a work in 27 hours. If he is joined by Jayantika who is 100% more efficient, in what time will they together finish the work?

A) 6 hours B) 3 hours
C) 9 hours D) 10 hours
 
Answer & Explanation Answer: C) 9 hours

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Filed Under: Simplification
Exam Prep: Bank Exams

Q:

If cosec 45° - sin 30° = x, then x is

A) 5/√3 B) (√6-1)/√2
C) √3+2 D) (2√2-1)/2
 
Answer & Explanation Answer: D) (2√2-1)/2

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Q:

If cosA = x, then x is

A) √(1 - cos2A) B) √(1 + sin2A)
C) √(1 + cos2A) D) √(1 - sin2A)
 
Answer & Explanation Answer: D) √(1 - sin2A)

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Q:

If x - 2y = 2 and 3x + y = 20, then the value of (x,y) is

A) (6, 2) B) (4, 1)
C) (3, 2) D) (5, 5)
 
Answer & Explanation Answer: A) (6, 2)

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Q:

If 9x - 6(3 - x) = 12, then the value of x is

A) 2 B) 4
C) 6 D) 9
 
Answer & Explanation Answer: B) 4

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Q:

If 1 dupatta is offered free on purchase of 4 dupattas priced Rs 1300 each what is the effective discount on each dupatta?

A) 66.67 percent B) 20 percent
C) 25 percent D) 12.5 percent
 
Answer & Explanation Answer: B) 20 percent

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Filed Under: Percentage
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Q:

If (1 + cosA)/(1 - cosA) = x, then x is

A) cot2A/(secA - 1)2 B) cot2A/(secA + 1)2
C) tan2A/(secA + 1)2 D) tan2A/(secA - 1)2
 
Answer & Explanation Answer: D) tan2A/(secA - 1)2

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Q:

If 7x + 2 ≥ x - 2 and 7 + 2x ≥ 3 + 3x; then x can take which of the following values?

A) 5 B) 3
C) -3 D) -5
 
Answer & Explanation Answer: B) 3

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