6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

123 typists typeed 984 papers in 1/15 hour. The number of papers typed for minute by a average typist is:

A) 1	B) 2
C) 3	D) 5

Answer & Explanation Answer: B) 2

Explanation:

Use unitary method:

In $\inline \frac{1}{15}$ hours, 123 typists can type 984 paper

In 1 minute, 123 typists can type $\inline \frac{984}{4}$ = 246 papers

In 1 minute, 1 typist can type $\inline \frac{246}{123}$ =2 papers [ Hint $\inline \frac{1}{15}$ hours = 4 minutes]

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Filed Under: Average

20 14078

Q:

The age of a person is thrice the total ages of his 2 daughters. 0.5 decades hence, his age will be twice of the total ages of his daughters. Then what is the father’s current age? [0.5 Decades = 5 Years]

A) 35 years	B) 40 years
C) 45 years	D) 47 years

Answer & Explanation Answer: C) 45 years

Explanation:

Let, Total of current ages of the 2 daughters is A years.
Then, father’s current age = 3A years.
(3A + 5) = 2 (A +10)
3A + 5 = 2A + 20
A = 15
Therefore, father’s current age = 45 years.

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Filed Under: Problems on Ages

27 14044

Q:

There are four prime numbers written in ascending order of magnitude. The product of the first three is 385 and of the last three is 1001. Find the fourth number ?

A) 17	B) 19
C) 13	D) 11

Answer & Explanation Answer: C) 13

Explanation:

(385/1001) = 5/13

First Number is 5

=> Fourth number is 13

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Filed Under: Problems on Numbers
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Bank Clerk , Bank PO

14 14040

Q:

Three milkmen rented a pasture. A grazed 24 cows for 4 months; B 10 cows for 6 months; C 56 cows for 5 months. If A's share of rent is Rs. 960, find the total rent of the field?

A) 4530	B) 4440
C) 4360	D) 4280

Answer & Explanation Answer: C) 4360

Explanation:

Ratio of shares of A,B,C = (24 x 4) : (10 x 6) : (56 x 5)

= 96 : 60 : 280.

Let total rent be Rs. x. Then, A's share = $R s . \frac{96 x}{436}$

$∴ \frac{96 x}{436} = 960 \Leftrightarrow x = \frac{960 \times 436}{96} = 4360$

Hence total rent of the field is Rs. 4360.

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Filed Under: Partnership
Exam Prep: CAT
Job Role: Bank PO

11 14029

Q:

If 4/7 of P is equal to 12/14 of Q, then what is P : Q?

A) 15 : 8	B) 14 : 9
C) 7 : 8	D) 3 : 2

Answer & Explanation Answer: D) 3 : 2

Explanation:

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Filed Under: Alligation or Mixture
Exam Prep: Bank Exams

2 14028

Q:

One year ago the ratio between Maneela’s and Shanthi’s salary was 3 : 4. The ratios of their individual salaries between last year’s and this year’s salaries are 4 : 5 and 2 : 3 respectively. At present the total of their salary is Rs. 4160. The salary of Maneela, now is?

A) Rs. 1600	B) Rs. 1700
C) Rs. 1800	D) Rs. 1900

Answer & Explanation Answer: A) Rs. 1600

Explanation:

Let the salaries of Maneela and Shanthi one year before be M1, S1 & now be M2, S2 respectively.

Then, from the given data,

M1/S1 = 3/4 .....(1)

M1/M2 = 4/5 .....(2)

S1/S2 = 2/3 .....(3)

and M2 + S2 = 4160 .....(4)

Solving all these eqtns, we get M2 = Rs. 1600.

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Filed Under: Ratios and Proportions
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration , IT Trainer

47 14028

Q:

The difference between a two-digit number and the number obtained by interchanging the two digits is 63. Which is the smaller of the two numbers ?

A) 12	B) 15
C) 17	D) none of these answers can be determined

Answer & Explanation Answer: D) none of these answers can be determined

Explanation:

Let the ten's digit be x and unit's digit be y.

Then, (10x + y) - (10y + x) = 63

=> 9 (x - y) = 63

=> x - y = 7.

Thus, none of the numbers can be deermined..

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Filed Under: Problems on Numbers

5 14014

Q:

Which is the correct ascending order of the given numbers?

A) 2/3, 5/6, 3/4	B) 3/4, 2/3, 5/6
C) 2/3, 3/4, 5/6	D) 5/6, 3/4, 2/3

Quantitative Aptitude - Arithmetic Ability Questions

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