6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

A woman fills a bucket in 6 minutes. 1845 buckets have to be filled from 8 am. to 9:30 am. How many woman employees should be employed for this task?

A) 111	B) 117
C) 123	D) 139

Answer & Explanation Answer: C) 123

Explanation:

We know that, $\frac{M 1 \times D 1}{W 1} = \frac{M 2 \times D 2}{W 2}$

Here M1 = 1, D1 = 6 min, W1 = 1 and M2 = M, D2 = 90 min, W2 = 1845

$\frac{1 \times 6}{1} = \frac{M \times 90}{1845}$

=> M = 123

Report Error

View Answer Report Error Discuss

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

8 4988

Q:

Prabhas is twice as good a workman as Rana and finishes a piece of work in 3 hours. In how many hours they together could finish that piece of work?

A) 3 hrs	B) 3.5 hrs
C) 2.5 hrs	D) 2 hrs

Answer & Explanation Answer: D) 2 hrs

Explanation:

Given Prabhas is twice as good a workman as Rana.

Prabhas finishes the work in 3 hrs

=> Rana finishes the work in 6 hrs.

Number of hours required together they could finish the work

= 3 x 6 / 3 + 6

= 18/9

= 2 hrs.

Report Error

View Answer Report Error Discuss

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

6 4986

Q:

A watch which gains uniformly is 2 minutes low at noon on Tuesday and is 4 min 48 sec fast at 2 p.m. on the following Tuesday. When was it correct ?

A) 12 p.m. on Wednesday	B) 2 p.m. on Thursday
C) 3 p.m. on Thursday	D) 2 p.m. on Wednesday

Answer & Explanation Answer: B) 2 p.m. on Thursday

Explanation:

Time from 12 p.m. on Tuesday to 2 p.m. on the following Tuesday = 7 days 2 hours.
= 170 hours.
The watch gains = (2 + 4 x 4/5) min
= 34/5 min. in 170 hrs.
Now, 34/5 min are gained in 170 hrs.
Then, 2 min are gained in (170 x 5/34 x 2) hrs.
Watch is correct after 2 days 2 hrs after 12 p.m. on Tuesday, i.e., it will be correct at 2 p.m. on Thursday.

Report Error

View Answer Report Error Discuss

Filed Under: Clocks
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
Job Role: Analyst , Bank Clerk , Bank PO , Network Engineer , Project Manager

9 4985

Q:

Cube root of 729 then square it

A) 9	B) 36
C) 81	D) 144

Answer & Explanation Answer: C) 81

Explanation:

729 = 9 x 9 x 9

=> Cube root of 729 = 9

Now, required square of 9 = 9 x 9 = 81.

Report Error

View Answer Report Error Discuss

Filed Under: Square Roots and Cube Roots
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

4 4982

Q:

In a particular week the average number of people who visited the Park is 40. If we exclude the holidays then the average is increased by 16. Further if we exclude also the day on which the maximum number of 112 people visited the Park, then the average becomes 42. The number of holidays in the week is

A) 1	B) 2
C) 3	D) 4

Answer & Explanation Answer: B) 2

Explanation:

Total number of people = 40 * 7 = 280

(7 -n)*(40+16) = 280

(7 -n)*56 = 280

7-n = 5

Number of holidays = 2

Report Error

View Answer Report Error Discuss

Filed Under: Average
Exam Prep: Bank Exams

4 4965

Q:

A man travels 480 km in 4 hours, partly by air and partly by train. If he had travelled all the way by air, he would have saved 4/5 of the time he would have taken to travel by train and would have arrived at his destination 2 hours early. Find the distance he covered by travelling by train.

A) 80 km	B) 120 km
C) 110 km	D) 90 km

Answer & Explanation Answer: B) 120 km

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Time and Distance
Exam Prep: Bank Exams

23 4965

Q:

The B.G. on a certain sum 4 years hence at 5% is Rs. 200. What is the present worth?

A) Rs. 4500	B) Rs. 6000
C) Rs. 5000	D) Rs. 4000

Answer & Explanation Answer: C) Rs. 5000

Explanation:

T = 4 years

R = 5%

Banker's Gain, BG = Rs.200

$T D = \frac{B G \times 100}{T R} = \frac{200 \times 100}{4 \times 5} = R s . 1000$

$T D = \sqrt{P W \times B G}$

$\Rightarrow 1000 = \sqrt{P W \times 200}$

=>PW = Rs.5000

Report Error

View Answer Report Error Discuss

Filed Under: Banker's Discount

3 4965

Q:

Three unbiased coins are tossed. What is the probability of getting at most two heads ?

A) 4/3	B) 2/3
C) 3/2	D) 3/4

Answer & Explanation Answer: D) 3/4

Explanation:

Let S be the sample space.
Here n(S)= $2^{3}$ = 8
Let E be the event of getting atmost two heads. Then,
n(E) = {(H,T,T), (T,H,T), (T,T,H), (H,H,T), (T,H,H), (H,T,H)}
Required probability = n(E)/n(S) = 6/8 = 3/4.

Report Error

View Answer Report Error Discuss

Filed Under: Probability
Exam Prep: GRE , GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk , Analyst

6 4960

Quantitative Aptitude - Arithmetic Ability Questions

Quick Links