6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

How many job applicants had applied if the ratio of selected to unselected was 19:17. If 1,200 less had applied and 800 less selected, then the ratio of selected to unselected would have been 1:1.

A) 6000	B) 7200
C) 8400	D) 4800

Answer & Explanation Answer: B) 7200

Explanation:

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

2 2443

Q:

Three friends J, K and L jog around a circular stadium and complete one round in 12, 18 and 20 seconds respectively. In how many minutes will all the three meet again at the starting point.

A) 5	B) 8
C) 12	D) 3

Answer & Explanation Answer: D) 3

Explanation:

All the three friends will meet at the starting point again after X seconds, such that X is the LCM of the times taken by J, K and L to complete one round.

=> LCM of 12, 18 and 20 = 180 seconds = 3 minutes.

Hence 3 minutes is the answer.

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Filed Under: HCF and LCM

1 2442

Q:

A trader had 2000 kgs of rice. He sold a part of it at 10% profit and the rest at 16% profit, so that he made a total profit of 14.2%. How much rice (in kg) did he sell at 10% profit?

A) 1400	B) 600
C) 800	D) 1000

Answer & Explanation Answer: B) 600

Explanation:

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

4 2442

Q:

The ratio of volume of a cone to that of a cylinder if cylinder radius is reduced by 4 times and its height increased by 8 times of that of the cone, is -

A) 3:2	B) 2:3
C) 5:7	D) 7:5

Answer & Explanation Answer: B) 2:3

Explanation:

Ans. Let radius of the base and height of the cone be ‘r’ & ‘h’ respectively.

Then volume of cone = πr2h/3 For cylinder, radius is reduced by 4 times = r/4 And, height is increased by 8 folds = 8h Volume of cylinder = πR2H = π(r/4)2 (8h) = (16/8)πr2h = πr2h/2 Ratio of volume of cone to volume of cylinder = (πr2h/3) : (πr2h/2) Or, Ratio = 2 : 3.

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: AIEEE , Bank Exams , GATE

1 2442

Q:

If a saree is sold for Rs 2880 the seller will face 10% loss, at what price (in Rs) should he sell to gain 20% profit?

A) 4830	B) 3840
C) 3480	D) 4380

Answer & Explanation Answer: B) 3840

Explanation:

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

5 2441

Q:

Simplify : $\frac{69 X 69 X 69 - 65 X 65 X 6}{69 X 69 + 69 X 65 + 65 X 65}$

A) 1	B) 4
C) 0.216	D) 0.164

Answer & Explanation Answer: B) 4

Explanation:

69 –65 = 4

69

–

65 = 4

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Filed Under: Simplification
Exam Prep: Bank Exams

0 2441

Q:

If a boat goes upstream at a speed of 24 km/hr and comes back the same distance at 40 km/hr. What is the average speed (in km/hr) for the total journey.

A) 32	B) 30
C) 31	D) 33

Answer & Explanation Answer: B) 30

Explanation:

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Filed Under: Boats and Streams
Exam Prep: Bank Exams

5 2441

Q:

If y% of y is 289, then what is the value of y?

A) 149	B) 160
C) 170	D) 173

Quantitative Aptitude - Arithmetic Ability Questions

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