Maths Practice Question and Answer

Q:

A mixture of 40 liters of milk and water contains 30% water. How much milk should be added to this mixture so that the new mixture contains 80% milk?

1771 1

  • 1
    20
    Correct
    Wrong
  • 2
    10
    Correct
    Wrong
  • 3
    15
    Correct
    Wrong
  • 4
    35
    Correct
    Wrong
  • 5
    25
    Correct
    Wrong
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Answer : 1. "20 "

Q:

Directions: Given table shows the data of population in 5 different parks. Study the data carefully and answer the questions.

If 30 females from each park are above 80 years age then find the average of no. of females who are below or equal to the age of 80 years from all the parks.

1771 0

  • 1
    295
    Correct
    Wrong
  • 2
    285
    Correct
    Wrong
  • 3
    300
    Correct
    Wrong
  • 4
    280
    Correct
    Wrong
  • 5
    290
    Correct
    Wrong
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Answer : 3. "300"

Q:

The difference between compound interest and simple interest on a sum for 2 year at 20% per annum is Rs 200. If the interest is compounded half yearly, then what is the difference (in Rs) between compound and simple interest for 15 year? 

1771 0

  • 1
    100
    Correct
    Wrong
  • 2
    150
    Correct
    Wrong
  • 3
    50
    Correct
    Wrong
  • 4
    75
    Correct
    Wrong
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Answer : 3. "50"

Q:

A tap can fill a Tank in 16 hours. Due to a hole in its base it I filled in 24 hours, If tank is full then in how many hours it will be empty through the hole.

1771 0

  • 1
    40
    Correct
    Wrong
  • 2
    36
    Correct
    Wrong
  • 3
    45
    Correct
    Wrong
  • 4
    48
    Correct
    Wrong
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Answer : 4. "48"

Q:

If x4+2x3+ax2+bx+9 is a perfect square where a and b are positive real numbers, then the value of a and b 

1770 0

  • 1
    a = 5, b = 6
    Correct
    Wrong
  • 2
    a = 6, b = 7
    Correct
    Wrong
  • 3
    a = 7, b = 7
    Correct
    Wrong
  • 4
    a = 7, b = 8
    Correct
    Wrong
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Answer : 2. "a = 6, b = 7"

Q:

The cost price of a radio is Rs. 600. The 5% of the cost price is charged towards transportation. After adding that, If net profit to be made is 15%, then the selling price of the radio must be 

1769 1

  • 1
    Rs. 664.50
    Correct
    Wrong
  • 2
    Rs. 684.50
    Correct
    Wrong
  • 3
    Rs. 704.50
    Correct
    Wrong
  • 4
    Rs. 724.50
    Correct
    Wrong
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Answer : 4. "Rs. 724.50 "
Explanation :

Q:

The profit percentage of P and Q is same on selling the articles at Rs. 1800 each but A calculates his profit on the selling price while Q calculates it correctly on the cost price which is equal to 20%. What is the difference in their profits?

1768 0

  • 1
    40
    Correct
    Wrong
  • 2
    50
    Correct
    Wrong
  • 3
    60
    Correct
    Wrong
  • 4
    70
    Correct
    Wrong
  • 5
    None of these
    Correct
    Wrong
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Answer : 3. "60"

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