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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

90% of X = 40% of Y and Y = a% of X. What is the value of a?

A) 225 B) 125
C) 2.25 D) 1.25
 
Answer & Explanation Answer: A) 225

Explanation:
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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

Find the L.C.M of 4/5, 2/3 and 5/7.

A) 25 B) 20
C) 40 D) 30
 
Answer & Explanation Answer: B) 20

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Filed Under: HCF and LCM
Exam Prep: Bank Exams

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Q:

If x2 + (1/x2) = 1, then what is the value of x48 + x42 + x36 + x30 + x24 + x18 + x12 + x6 + 1?

A) -9 B) 0
C) 1 D) 9
 
Answer & Explanation Answer: C) 1

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

The base of a parallelogram is twice its height. If the area of the parallelogram is 338 sq.cm. Find its height?

A) 13 cm B) 14 cm
C) 16 cm D) 12 cm
 
Answer & Explanation Answer: A) 13 cm

Explanation:
Let height =x Then, base =2x
2x * x = 338
=>x=13
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Filed Under: Area
Exam Prep: Bank Exams

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Q:

If P : Q : R = 2 : 3 : 5, then what is the value of (P + Q) : (Q + R) : (R + P)?

A) 5:8:7 B) 2:3:5
C) 5:8:10 D) 4:9:25
 
Answer & Explanation Answer: A) 5:8:7

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

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Q:

Robin can do a work alone in 9 days. Amit can do the same work alone in 6 days. Both of them finish the work together and they get a total Rs 2500. What isthe share (in Rs) of Robin?

A) 1700 B) 1200
C) 1500 D) 1000
 
Answer & Explanation Answer: D) 1000

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Filed Under: Time and Work

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Q:

A mason can build a wall in 70 hours. After 7 hours he takes a break. What fraction of the wall is yet to be built?

A) 0.9 B) 0.8
C) 0.5 D) 0.75
 
Answer & Explanation Answer: A) 0.9

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Filed Under: Time and Work
Exam Prep: Bank Exams

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Q:

A  field  can  be  reaped  by  12  men  or  18  women  in  14  days.  In  how  many  days  can  8  men  and  16 women reap it?

A) 26 days B) 24 days
C) 9 days D) 8 days
 
Answer & Explanation Answer: C) 9 days

Explanation:
12 men or 18 women can complete in 14 days
8 men and 16 women can complete in how many days
12men = 18 women (Comparing efficiencies)
1men = 18/12 = 1.5 women
8 men and 16 women = 12women + 16 women = 28 women
18 women completes in 14 days
1 woman completes in 14*18 days
28 women completes in (14*18)/28 days = 9 days
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Filed Under: Time and Work
Exam Prep: Bank Exams

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