6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

4 men can repair a road in 7 hours. How many men are required to repair the road in 2 hours ?

A) 17 men	B) 14 men
C) 13 men	D) 16 men

Answer & Explanation Answer: B) 14 men

Explanation:

M x T / W = Constant
where, M= Men (no. of men)
T= Time taken
W= Work load
So, here we apply
M1 x T1/ W1 = M2 x T2 / W2
Given that, M1 = 4 men, T1 = 7 hours ; T2 = 2 hours, we have to find M2 =?
Note that here, W1 = W2 = 1 road, ie. equal work load.
Clearly, substituting in the above equation we get, M2 = 14 men.

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Filed Under: Time and Work
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Bank Clerk , Bank PO

40 40594

Q:

In 100 m race, A covers the distance in 36 seconds and B in 45 seconds. In this race A beats B by:

A) 20m	B) 25m
C) 22.5m	D) 9m

Answer & Explanation Answer: A) 20m

Explanation:

Distance covered by B in 9 sec. = (100/45)*9m = 20m

A beats B by 20 metres.

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Filed Under: Races and Games

54 40555

Q:

Find the volume (in cm3) of a sphere of diameter 7 cm.

A) 140.25	B) 179.67
C) 337.16	D) 213.74

Answer & Explanation Answer: B) 179.67

Explanation:

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

2 40496

Q:

Direction: What value should come in place of the question mark (?) in the following question?

$\sqrt{529} * 6 / 2 * ? = 14076$

A) 204	B) 251
C) 102	D) 146

Answer & Explanation Answer: A) 204

Explanation:

23*3*x=14076
69*x=14076
= 69 =204

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

0 40493

Q:

Two horses start trotting towards each other, one from A to B and another from B to A. They cross each other after one hour and the first horse reaches B, 5/6 hour before the second horse reaches A. If the distance between A and B is 50 km. what is the speed of the slower horse?

A) 30 km/h	B) 15 km/h
C) 25 km/h	D) 20 km/h

Answer & Explanation Answer: D) 20 km/h

Explanation:

If the speed of the faster horse be $f_{s}$ and that of slower horse be $s_{s}$ then

$f_{s} + s_{s} = \frac{50}{1} = 50$

and $\frac{50}{s_{s}} - \frac{50}{f_{s}} = \frac{5}{6}$

Now, you can go through options.

The speed of slower horse is 20km/h

Since, 20+30=50

and $\frac{50}{20} - \frac{50}{30} = \frac{5}{6}$

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Filed Under: Time and Distance

159 40493

Q:

In the following question, select the odd letter/letters from the given alternatives.

A) BGLR	B) DINS
C) HMRW	D) KPUZ

Answer & Explanation Answer: A) BGLR

Explanation:

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Filed Under: Odd Man Out
Exam Prep: Bank Exams

0 40347

Q:

A mixture of 150 liters of wine and water contains 20% water. How much more water should be added so that water becomes 25% of the new mixture?

A) 10 liters	B) 20 liters
C) 30 liters	D) 40 liters

Answer & Explanation Answer: A) 10 liters

Explanation:

Number of liters of water in 125 liters of the mixture = 20% of 150 = 1/5 of 150 = 30 liters

Let us Assume that another 'P' liters of water are added to the mixture to make water 25% of the new mixture. So, the total amount of water becomes (30 + P) and the total volume of the mixture becomes (150 + P)

Thus, (30 + P) = 25% of (150 + P)

Solving, we get P = 10 liters

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Filed Under: Alligation or Mixture

151 40272

Q:

(2,14,16), (3,21,24), (8,56,64), (5,35,41)

The set that does NOT belong to the group is

A) (5,35,41)	B) (2,14,16)
C) (3,21,24)	D) (8,56,64)

Quantitative Aptitude - Arithmetic Ability Questions

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