Aptitude - Aptitude-Percentage

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Raman's salary was decreased by 50% and subsequently increased by 50%. How much percent does he loss?

  • a
  • b
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  • d
  • OOPS, your answer is incorrect

    Let the origianl salary = Rs. 100

    It will be 150% of (50% of 100)
    = (150/100) * (50/100) * 100 = 75

If number x is 10% less than another number y and y is 10% more than 125, then find out the value of x?

  • a
  • b
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  • d
  • OOPS, your answer is incorrect

A housewife saved Rs. 2.50 in buying an item on sale. If she spent Rs. 25 for the item, approximately how much percent she saved in the transaction?

  • a
  • b
  • c
  • d
  • OOPS, your answer is incorrect

    Actual Price = Rs.25 + Rs.2.50 = Rs.27.5

    Saving = Rs.2.5
    Percentage Saving = 2.527.5×100=25027.5=2500275=10011=9111%≈9%

How many litres of pure acid are there in 8 litres of a 20% solution?

  • a
  • b
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  • OOPS, your answer is incorrect

    Question of this type looks a bit typical, but it is too simple, as below...

    It will be 8 * 20/100 = 1.6

10% of inhabitants of a village having died of cholera, a panic set in, during which 25% of the remaining inhabitants let the village. The population is then reduced to 4050. Find the original inhabitants?

  • a
  • b
  • c
  • d
  • OOPS, your answer is incorrect

    Let the total number is x,
    then,

    (100-25)% of (100 - 10)% x = 4050
    => 75% of 90% of x = 4050
    => 75/100 * 90/100 * x = 4050
    => x = (4050*50)/27 = 6000

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