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Percentage problems


  • 1. 
    The sum of 15% of a positive number and 20% of the same number is 126. What is one-third of that number

  • Options
  • A. 360
  • B. 1080
  • C. 120
  • D. 40
  • Discuss
  • 2. 
    In a test, A scored 10% more than B and B scored 5% more than C. If C scored 300 marks out of 400, then A's marks are

  • Options
  • A. 310
  • B. 325
  • C. 350
  • D. 360
  • Discuss
  • 3. 
    Mathew scored 42 marks in Biology, 51 marks in Chemistry, 58 marks in Mathematics, 35 marks in Physics and 48 marks English. The maximum marks, a student can score in each subject, are 60. How much overall percentage did Mathew get in this exam?

  • Options
  • A. 76%
  • B. 82%
  • C. 68%
  • D. 78%
  • Discuss
  • 4. 
    A student was asked to measure the length and breadth of a rectangle. By mistake, he measured the length 20% less and the breath 10% more. if its original area is 200 sq cm, then find the area after this measurement?

  • Options
  • A. 176 sq cm
  • B. 206 sq cm
  • C. 226 sq cm
  • D. 316 sq cm
  • Discuss
  • 5. 
    A box has 100 blue balls, 50 red ballss and 50 black balls. 25% of blue balls and 50% of red balls are taken away. Then, percentage of black balls at present is?

  • Options
  • A. 25%
  • B. 331/3
  • C. 40%
  • D. 50
  • Discuss
  • 6. 
    The price of two article are as 3 : 4. If the price of the first article is increased by 10% and that if the second by ? 4 one original ratio remains the same. The original price of the second article is

  • Options
  • A. ? 40
  • B. ? 10
  • C. ? 30
  • D. ? 35
  • Discuss
  • 7. 
    from 2008 to 2009, the sales of a book decreased by 80%. If the sales in 2010 was the same as in 2008, by what per cent did it increase from 2009 to 2010?

  • Options
  • A. 80%
  • B. 100%
  • C. 120%
  • D. 400%
  • Discuss
  • 8. 
    In a particular constituency, 75% of voters cast their votes, out of which 2% were rejected. The winning candidate received 75% of the valid votes and bagged a total of 9261 votes. The total number of voters in the constituency is

  • Options
  • A. 14500
  • B. 18900
  • C. 16800
  • D. 24000
  • Discuss
  • 9. 
    Last year, there were 610 boys in a school. The number decreased by 20% this year. How many girl are there in the school, if the number of boys in the school this year?

  • Options
  • A. 854
  • B. 848
  • C. 798
  • D. 782
  • Discuss
  • 10. 
    Aryan got 350 marks and Vidya scored 76% marks in the same test. If Vidaya scored 296 marks more than Aryan, then what were the maximum marks of the test?

  • Options
  • A. 650
  • B. 900
  • C. 850
  • D. 950
  • Discuss

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