Percentages

In an examination, A has scored 20 marks more than B

In an examination, A has scored 20 marks more than B. If B has scored 5% less marks than A, how much has B scored?

  1. 360
  2. 380
  3. 400
  4. 420
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Raju has Rs. 9000 with him and he wants to buy a mobile handset

Raju has Rs. 9000 with him and he wants to buy a mobile handset; but he finds that he has only 75% of the amount required to buy the handset. Therefore, he borrows Rs. 2000 from a friend. Then

  1. Raju still does not have enough amount to buy the handset.
  2. Raju has exactly the same amount as required to buy the handset.
  3. Raju has enough amount to buy the handset and he will have Rs. 500 with him after buying the handset.
  4. Raju has enough amount to buy the handset and he will have Rs. 1000 with him after buying the handset.
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When a runner was crossing the 12 km mark

When a runner was crossing the 12 km mark, she was informed that she had completed only 80% of the race. How many kilometres was the runner supposed to run in this event?

  1. 14
  2. 15
  3. 16
  4. 16.5
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A and B are two heavy steel blocks. If B is placed on the top of A

A and B are two heavy steel blocks. If B is placed on the top of A, the weight increases by 60%. How much weight will reduce with respect to the total weight of A and B, if B is removed from the top of A?

  1. 60%
  2. 45.5%
  3. 40%
  4. 37.5%
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A student has to get 40% marks to pass in an examination

A student has to get 40% marks to pass in an examination. Suppose he gets 30 marks and fails by 30 marks, then what are the maximum marks in the examination?

  1. 100
  2. 120
  3. 150
  4. 300
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If a% of a + b% of b = 2% of ab, then what percent of a is b

If a% of a + b% of b = 2% of ab, then what percent of a is b?

  1. 50%
  2. 75%
  3. 100%
  4. Cannot be determined
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5/9 th part of the population in a village are males. If 30% of the males are married

5/9 th part of the population in a village are males. If 30% of the males are married, the percentage of unmarried females in the total population is

  1. 20 2/9
  2. 27 2/9
  3. 27 7/9
  4. 29 2/9
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If each of the dimensions of a rectangle is increased by 200%

If each of the dimensions of a rectangle is increased by 200%, the area is increased by

  1. 300%
  2. 400%
  3. 600%
  4. 800%
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The rabbit population in community A increases at 25% per year

The rabbit population in community A increases at 25% per year while that in community B increases at 50% per year. If the present populations of A and B are equal, what will he the ratio of the number of rabbits in community B to that in community A after 2 years?

  1. 1.44
  2. 1.72
  3. 1.90
  4. 1.26
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In a certain year, a school had 60% boys and 40% girls as students

In a certain year, a school had 60% boys and 40% girls as students. In the next five years the number of boys decreased by 10% and the number of girls increased by 10%. What is the change in total roll strength of the school in the five years?

  1. 3% increase
  2. 2% decrease
  3. No change
  4. 5% decrease
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What is the number whose 20% is 30% of 40

What is the number whose 20% is 30% of 40?

  1. 50
  2. 60
  3. 80
  4. 90
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The radius of the base of a right circular cone is increased by 15%

The radius of the base of a right circular cone is increased by 15% keeping the height fixed. The volume of the cone will be increased by

  1. 34.75%
  2. 32.25%
  3. 31%
  4. 30%
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The price of an article is ₹ 25. After two successive cuts

The price of an article is ₹ 25. After two successive cuts by the same percentage, the price becomes ₹ 20.25. If each time the cut was x%, then

  1. x = 9
  2. x = 10
  3. x = 11
  4. x = 11.5
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If m% of m + n% of n = 2% of (m × n)

If m% of m + n% of n = 2% of (m × n), then what percentage of m is n?

  1. 25%
  2. 50%
  3. 75%
  4. 100%
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What is 5% of 50% of 500

What is 5% of 50% of 500?

  1. 1.25
  2. 12.5
  3. 6.25
  4. 25
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A man loses 20% of his money. After spending 25% of the remainder

A man loses 20% of his money. After spending 25% of the remainder, he has ₹ 480 left. What is the amount of money he originally had?

  1. ₹ 600
  2. ₹ 720
  3. ₹ 800
  4. ₹ 840
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An employee is required to contribute 10% of his pay

An employee is required to contribute 10% of his pay to General Provident Fund. If he gets ₹13,500 as net pay in a month, then what is the monthly General Provident Fund contribution (assuming no other deductions)?

  1. ₹ 1215
  2. ₹ 1350
  3. ₹ 1500
  4. ₹ 1650
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In a test, a candidate attempted only 8 questions and secured

In a test, a candidate attempted only 8 questions and secured 50% marks in each of the questions. If he obtained a total of 40% in the test and all questions in the test carried equal marks, how many questions were there in the test?

  1. 8
  2. 10
  3. 15 
  4. 16
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The tank-full petrol in Arun's motor-cycle lasts for 10 days

The tank-full petrol in Arun's motor-cycle lasts for 10 days. If he starts using 25% more everyday, how many days will the tank-full petrol last?

  1. 5
  2. 6
  3. 7
  4. 8
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In a group of persons, 70% of the persons are male

In a group of persons, 70% of the persons are male and 30% of the persons are married. If two sevenths of males are married, what fraction of the females is single?

  1. 2/7
  2. 3/7
  3. 2/3
  4. 1/3
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In an examination, the maximum possible score is N

In an examination, the maximum possible score is N while the pass mark is 45% of N. A candidate obtains 36 marks, but falls short of the pass mark by 68%. Which one of the following is then correct?

  1. N ≤ 200
  2. 243 ≤ N ≤ 252
  3. N ≥ 253
  4. 201 ≤ N ≤ 242
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A report consists of 20 sheets each of 55 lines and each such line consist of 65 characters

A report consists of 20 sheets each of 55 lines and each such line consist of 65 characters. This report is retyped into sheets each of 65 lines such that each line consists of 70 characters. The percentage reduction in number of sheets is closest to

  1. 5
  2. 20
  3. 30
  4. 35
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If a quantity is increased by 20% and then decreased by 10%, then what is the net

If a quantity is increased by 20% and then decreased by 10%, then what is the net increase or decrease?

  1. 10% Decrease
  2. 10% Increase
  3. 8% Increase
  4. 8% Decrease
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In a stockpile of products produced by three machines M1, M2 and M3

In a stockpile of products produced by three machines M1, M2 and M3, 40% and 30% were manufactured by M1 and M2 respectively. 3% of the products of M1 are defective, 1% of products of M2 defective, while 95% of the products of M3 are not defective. What is the percentage of defective in the stockpile?

  1. 5%
  2. 4%
  3. 3%
  4. 2.5%
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The pre-paid recharge of Airtel gives 21% less talk time than the same price

The pre-paid recharge of Airtel gives 21% less talk time than the same price pre-paid recharge of Vodafone. The post-paid talk time of Airtel is 12% more than its pre-paid recharge, having the same price. Further, the post-paid talk time of same price of Vodafone is 15% less than its pre-paid recharge. How much percent less / more talk time can one get from the Airtel post-paid service compared to the post-paid service of Vodafone?

  1. 3.9% more
  2. 4.7% less
  3. 4.7% more
  4. 2.8% less
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As a strategy towards retention of customers, the service centre

As a strategy towards retention of customers, the service centre of a split AC machine manufacturer offers discount as per the following rule: for the second service in a year, the customer can avail of a 10% discount; for the third and fourth servicing within a year, the customer can avail of 11% and 12% discounts respectively of the previous amount paid, Finally, if a customer gets more than four services within a year, he has to pay just 55% of the original servicing charges. If Rohan has availed 5 services from the same service centre in a given year, the total percentage discount availed by him is approximately

  1. 16.52
  2. 20.88
  3. 22.33
  4. 24.08
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Out of the shirts produced in a factory, 15% are defective

Out of the shirts produced in a factory, 15% are defective, while 20% of the rest are sold in the domestic market. If the remaining 8840 shirts are left for export, then the number of shirts produced in the factory is

  1. 13600
  2. 13000
  3. 13400
  4. 14000
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In a village, the production of food grains increased by 40%

In a village, the production of food grains increased by 40% and the per capita production of food grains increased by 27% during a certain period. The percentage by which the population of the village increased during the same period is nearest to 

  1. 16
  2. 13
  3. 10
  4. 7
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