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  • Question
  • A ore contains 12% copper. How many kg of ore are required to get 69 kg of copper?


  • Options
  • A. 424 kg
  • B. 575 kg
  • C. 828 kg
  • D. 17362/3 kg

  • Correct Answer
  • 575 kg 

    Explanation

    &becaus 12% of W = 69
    ? W = (69 x 100) / 12 = 575 kg


  • Percentage problems


    Search Results


    • 1. 
      A fruit seller had some apples. He sells 40% and still has 420 apples. Originally, he had?

    • Options
    • A. 588 apples
    • B. 600 apples
    • C. 672 apples
    • D. 700 apples
    • Discuss
    • 2. 
      A man spends Rs. 3500 per month and saves 12 1/ 2% of his income. His monthly income is?

    • Options
    • A. Rs. 4400
    • B. Rs. 4270
    • C. Rs. 4000
    • D. Rs. 3937.50
    • Discuss
    • 3. 
      After deducting a commission of 5% a T.V. set costs Rs. 9595. Its gross value is?

    • Options
    • A. Rs. 10000
    • B. Rs. 10074.75
    • C. Rs. 10100
    • D. None of these
    • Discuss
    • 4. 
      96% of the population of a village is 23040. The total population of the village is?

    • Options
    • A. 32256
    • B. 24000
    • C. 24936
    • D. 25640
    • Discuss
    • 5. 
      One-third of 1206 is what percent of 134?

    • Options
    • A. 3
    • B. 30
    • C. 300
    • D. None of these
    • Discuss
    • 6. 
      In an examination 65% of the total examinees passed if the number of failures is 420 total number of examinees is?

    • Options
    • A. 567
    • B. 693
    • C. 1000
    • D. 1200
    • Discuss
    • 7. 
      75% of a number when added to 75 is equal to the number. The number is?

    • Options
    • A. 150
    • B. 200
    • C. 225
    • D. 300
    • Discuss
    • 8. 
      What will be 80 percent of a number whose 200 percent is 90?

    • Options
    • A. 144
    • B. 72
    • C. 36
    • D. None of these
    • Discuss
    • 9. 
      The price of rice has increased by 60%. In order to restore to the original price, the new price must be reduced by?

    • Options
    • A. 331/3%
    • B. 371/2%
    • C. 40%
    • D. 45%
    • Discuss
    • 10. 
      One litre of water is evaporated from 6 litre of a solution containing 5% salt. The percentage of salt?

    • Options
    • A. 44/19%
    • B. 55/7%
    • C. 5%
    • D. 6%
    • Discuss


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