[Solved] Answer Keys of Math Questions of Postal/Sorting Assistant Examination 2013 (Date- 5th May, 2013)

As I promised earlier, today I’m providing the Answer keys of the ‘Math’ questions of the Postal/Sorting Assistant Examination (India Post). The minimum cut off marks of each section 10. 

This is the 3^rd post on the series of Answer keys. Here the links to the previous two posts:

[Solved] Answer Keys of English Questions of Postal/Sorting Assistant Examination 2013 (Date- 5th May, 2013)

[Solved] General Knowledge Questions of Postal/Sorting Assistant Examination 2013 (Date- 5th May)

So, here are the all 25 questions, and there complete solutions, as per my best knowledge. I hope you all will like it. Please comment below if you have any questions or suggestions about the Postal Department Recruitment Examination 2013. You may need to click the “Read More” button to get started.

1. In an office there are 75% skilled workers and remaining are Unskilled. 80% of skilled workers and 20% of unskilled workers are permanent. If number of temporary workers is 189, then what is the number of total workers?

Ans: 540.

2. Raman crosses a road 375 metres wide in 75 seconds. His speed in km/hr is:

Ans: 18.

3. The average of 5 consecutive numbers A, B, C, D and E is 48. What is the product of A and D?

Ans: 2254.

4. The height of a wall is six times its width and the length of a wall is seven times its height. If volume of the wall be 16125 Cu. m., its width is:

Ans: 4 m.

5. A container of oil was 4/5 full. When six bottles of oil were taken out and four bottles of oil were poured into it, it was ¾ full. How many bottles of oil were contained by the container?

Ans: 40.

6. Ranjeet wages were reduced by 50%. Again the reduced wages is increased by 50%. What is his loss/gain?

Ans: Loss 25%.

7. What value will obtain if 25% of 2340 is subtracted from 4/9 of square of 36?

Ans: -9.

8. In a class the highest marks scored were 67 and lowest were 32. While calculating the average of the marks these were erroneously written as 76 and 23/ The average of marks of the class will:

Ans: Remain unchanged.

9. A customer wanted 30% discount on his purchase. The dealer gave him successive discounts of 20% & 12%. The customer got discount:

Ans: Less than what he wanted.

10. A, B, C, D are mid points of the rectangle. AB=10 cm. If one of the sides of the rectangle is 12 cm, what is the area of ABCD?

Ans: 96 sq cm.

11. In a History examination, the average for the entire class was 80 marks. If 10% of the students scored 95 marks and 20% scored 90 marks. What was the average mark of the remaining students of the class?

Ans: 75.

12. Sixty men can build a wall in 40 days, but though they begin the work together, 5 men quit every ten days. The time needed to build the wall is:

Ans: 47.5 days.

13. A factory producing a certain number of cars a day finds that by increasing production efficiency by 12 ½ % they can produce 20 additional cars a day. How many cars will they produce in a day when their efficiency is 25% less?

Ans: 120.

14. A shop owner gives a discount of 10% on the marked price of a radio, but in the bargain makes a profit of 10%. If the marked price is Rs. 330/-, the cost price is rupees:

Ans: None of These. (267.3)

15. Pipe A can fill an empty tank in 5 hours and pipe B in 7 hours. If both the pipes are opened together and after 1 ½ hours pipe B is closed, how much time A will take to fill the remaining tank?

Ans: 17/7 hours.

16. A number consists of two digits whose sum is 9. If 27 is added to the number, its digits are reversed. Find the number?

Ans: 36.

17. Two numbers are such that the ratio between them is 3:5. If each is increased by 20 the ratio between the new numbers so forms is 7:9. Find the original numbers:

Ans: 15, 25.

18. Arjun and Aryan can finish a project in 27 days. Arjun alone can do 1/3 of this project in 15 days. In how many days can Aryan alone do this project?

Ans: 67 ½ days.

19. A machine was purchased for Rs. 4,450 and Rs. 350 was paid for transportation. If it to be sold for Rs 6,600, then find the gain percent:

Ans: 37.5%.

20. When simple interest is calculated on a sum of money it makes itself 3/2 in 8 years. What is the rate of interest?

Ans: 6.25%.

21. Simplify- 2^65*2^70-2^97*2^38

Ans: 0.

22. Find the length of a side of a square, whose area is equal to the area of a rectangle with sides 240m and 60m:

Ans: 120 m.

23. A clerk spends 15% of his total income on house rent. He uses 60% of the remaining income to meet his expenses. If he saves Rs. 1,700, then what is his total income?

Ans: Rs. 5,000.

24. Find the amount of Rs 125000 after 2 ½ years when interest is compounded half yearly at the rate of 8% per annum (Approximate Best value):

Ans: 152081.

25. Chandni went for shopping and spent half of what she had on buying shocks and gave a rupee to a beggar waiting outside the shop. She spent half of what was left on a lunch and followed that up with a two rupee tip. She spent half of the remaining amount on a novel and three rupees on bus fare. When she reached home, she found that she had exactly Rs. 2 left. How much money did she start with?

Ans: 50.

Don’t forget to share what are your expected marks in Math section for the PA/SA exams in the comments box below. I will try to analyze your results to provide you an idea of your chances of getting selected for typing test.

Do you like this article and want to stay updated with all the Latest Current Affairs updates? If yes then please take a second to Subscribe via Email or join our G+ Community. You can send your queries, suggestions to us by accessing this Contact Us Form, or you can play Current Affairs Quiz too. 

 

About the Author

Aditya Dey is a well-known blogger from Kolkata, India. Apart from Blogging, he is a fun loving person. His areas of Interest are Current Affairs, Latest Events, News on sectors like technology, finance, business, politics, economy etc. At this blog he Writes about current affairs, latest news, exam preparation tips for competitive exams etc.

Get Free Email Updates to your Inbox!

• Rss
• Twitter
• FaceBook
• Google +