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Quiz Discussion

Out of the total production of iron from hematite, an ore of Iron, 20% of the ore gets wasted, and out of the remaining iron, only 25% is pure iron. If the pure iron obtained in a year from a mine of hematite was 80,000 kg, then the quantity of hematite mined from that mine in the year is

 

Course Name: Quantitative Aptitude

  • 1] 5,00,000 kg
  • 2] 4,00,000 kg
  • 3] 4,50,000 kg
  • 4] None of these
Solution
No Solution Present Yet

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220% of a number X is 44. What is 44% of X.

  • 1] 8.8
  • 2] 8.9
  • 3] 6.6
  • 4] 7.7
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express 62.5% as a fraction

  • 1]

    1/2

  • 2]

    5/8

  • 3]

    3/8

  • 4]

    7/8

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In the Science City, Kolkata the rate of the ticket is increased by 50% to increased the revenue but simultaneously 20% of the visitor decreased. What is percentage change in the revenue. if it is known that the Science city collects one revenue only from the visitors and it has no other financial supports:

  • 1] +20%
  • 2] -25%
  • 3] +30%
  • 4] -30%
  • 5] Cannot determined
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A fraction in reduced form is such that when it is squared and then its numerator is reduced by 33 1/3 % and denominator is reduced to 20%, its result is twice the original fraction. The sum of numerator and denominator is:

 

  • 1] 8
  • 2] 13
  • 3] 17
  • 4] 15
  • 5] None of these
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If the price of the commodity is increased by 50% by what fraction must its consumption be reduced so as to keep the same expenditure on its consumption?

 

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    1/4

  • 2]

    1/3

  • 3]

    1/2

  • 4]

    2/3

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If the price of a commodity is decreased by 20% and its consumption is increased by 20%, what will be the increase or decrease in expenditure on the commodity?

  • 1] 4% increase
  • 2] 4% decrease
  • 3] 8% increase
  • 4] 8% decrease
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The length, breadth and height of a room in the shape of a cuboid are increased by 10%, 20% and 50% respectively. Find the percentage change in the volume of the cuboid.

  • 1] 77%
  • 2] 75%
  • 3] 88%
  • 4] 98%
  • 5] 99%
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A and B are two fixed points 5 cm apart and C is a point on AB such that AC is 3cm. if the length of AC is increased by 6%, the length of CB is decreased by

  • 1] 6%
  • 2] 7%
  • 3] 8%
  • 4] 9%
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The price of the sugar rise by 25%. If a family wants to keep their expenses on sugar the same as earlier, the family will have to decrease its consumption of sugar by

  • 1] 25%
  • 2] 20%
  • 3] 80%
  • 4] 75%
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Half percent, written as a decimal, is

  • 1] 0.2
  • 2] 0.02
  • 3] 0.005
  • 4] 0.05
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