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

Correct Answer(D)

Q.2. The value of =?

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

Correct Answer(D)

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

Correct Answer: (B)

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

Correct Answer: (B)

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

Correct Answer: (B)

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

Correct Answer: (C)

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

Correct Answer: (B)

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

Correct Answer: (B)

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

Correct Answer: (A)

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

Correct Answer: (A)

ANSWERS WITH EXPLANATION

A.1. Correct Answer(D)

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

A.2.Correct Answer(D)

Explanation:

A.3. Correct Answer(B)

Explanation:

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

A.4. Correct Answer: (B)

Explanation:

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

A.5. Correct Answer: (B)

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

A.6. Correct Answer: (C)

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.

A.7. Correct Answer: (B)

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

A.8. Correct Answer: (B)

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

A.9. Correct Answer: (A)

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

A.10. Correct Answer: (A)

Explanation

Average = 12∗(1+2+3+4+5) ∗1/5
= 12 ∗ 15∗ 1/5
= 12 ∗ 3= 36