## Quantitative Aptitude Questions and Answers With Explanation (Practice set 2)

By Sahil Bansal | Views: 2376

Q.1. Worker A completes a task in 12 days and worker B completes the same task in 15 days. If both A and B work together, in how many days they will complete the task?

1. days.
2. days.
3. days.
4. None of the above

Q.2. The value of =?

1. 98
2. 35
3. 350
4. None of these.

Q.3.  If 30% of a certain number is 12.6, what is the number?
(A) 24
(B) 42
(C) 23
(D) 32

Q.4. Find  the missing term of the given expression:
18.834 + 818.34 -? = 618.43
(A) 217.644
(B) 218.744
(C) 217.744
(D) 217.844

Q.5. What is the market price of a 9% share when a person gets 180 by investing Rs. 4000?
(A) 150
(B) 200
(C) 250
(D) 300

Q.6. Complete the series 2, 5, 9, 19, 37.......
(A) 76
(B) 74
(C) 75
(D) None of these.

Q.7. The average weight of 10 men is decreased by 2 kg when one of them whose weight is 60 kg is replaced by a new man. What is the weight of the new man?
(A) 35 kg
(B) 40 kg
(C) 45 kg
(D) 50 kg

Q.8. Mohan gets a salary of Rs. 6435, Rs. 6927, Rs. 6855, Rs. 7230 and Rs. 6562 for 5 months. How much salary he must-have in the sixth month so that he gets an average of Rs. 6500?
(A) 4091
(B) 4991
(C) 3499
(D) 3344

Q.9. A man purchases a TV for Rs. 8000 and sells it at 10% loss. What is the selling price of T.V?
(A) Rs.7200
(B) Rs.7000
(C) Rs.6900
(D) Rs.6500

Q.10. What is the average of the first five multiples of 12?
(A) 36
(B) 38
(C) 40
(D) 42

Explanation:

Worker A completes the task in 12 days. So in one day, he will complete the 1/12 part of the task.

So, A's one day work =1/12

Similarly, B's one day work =1/15

∴ (A+B)'s one day work =1/12+1/15=3/20

3/20 of the task is completed in one day so both will complete the whole task in 20/3 days

Explanation:

Explanation:

Let the required number be x.
So, according to the question:

Explanation:

18.834 + 818.34 - ? = 618.43
Or, 18.834 + 818.340 - 618.43 =?
837.174 - 618.430 = 218.744

Explanation:

Let the face value of the share = Rs. 100
Dividend per share = 9
As per the question, an income of Rs. 180 is obtained from an investment of Rs. 4000.
So, an income of Rs. 9 is obtained from an investment of Rs. = (4000/180) * 9 = 200
So, the market price of the share = Rs. 200

Explanation:

The second number is one more than twice the first,
2 x 2 +1 = 5
The third number is one less than twice the second,
5 x 2 -1 = 9
The fourth number is one more than twice the third,
9 x 2 +1 = 19
The fifth number is one less than twice the fourth.
19 x 2 - 1 = 37
Therefore, the sixth number is one more than twice the fifth. So, the missing number:
37 x 2 + 1 = 75.

Explanation

The average decrease in weight per person = 2kg
There are 10 men so a total decrease in weight on replacing a man with a new man = 10 ∗ 2= 20 kg
Weight of the man who is replaced = 60 kg
∴The weight of the new man would be = Weight of man replaced - total decrease in weight of the group of 10 men.
= 60 - 20 = 40 kg

Explanation

Total salary for 5 months = Rs. (6435 + 6927 + 6855 + 7230 + 6562) = Rs. 34009.
Required salary = Rs. [ (6500 x 6) - 34009 ]
= Rs. (39000 - 34009)
= Rs. 4991

Explanation

C.P. of the TV = Rs. 8000

S.P. of the TV =?

Loss incurred = 10%

Apply formula: Selling Price =* C.P.

Therefore, S.P. =* 8000

* 8000 = 7200