Maths Practice Question and Answer

Q:

A can finish one-third of a work in 5 days, B can finish 2/5th of the same work in 10 days and C can finish 75 % of the same work in 15 days. They work together for 6 days. The remaining work will be finished by B alone in:

1159 0

  • 1
    2 days
    Correct
    Wrong
  • 2
    $$ {1{1\over 2}}$$ days
    Correct
    Wrong
  • 3
    3 days
    Correct
    Wrong
  • 4
    5 days
    Correct
    Wrong
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Answer : 2. "$$ {1{1\over 2}}$$ days"

Q:

A works twice as fast as B and B works twice as fast as C. All three working together can finish a task in 4 days with the help of D. If D alone can finish the same task in 16 days, then in how many days will A alone finish 75 % of the same task?

1221 0

  • 1
    9
    Correct
    Wrong
  • 2
    7
    Correct
    Wrong
  • 3
    6
    Correct
    Wrong
  • 4
    8
    Correct
    Wrong
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Answer : 2. "7"

Q:

The Value of $$ {\sqrt{6-\sqrt{17-2\sqrt{72}}}}$$ is closest to:

1225 0

  • 1
    2.1
    Correct
    Wrong
  • 2
    2.7
    Correct
    Wrong
  • 3
    2.4
    Correct
    Wrong
  • 4
    1.8
    Correct
    Wrong
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Answer : 3. "2.4"

Q:

An observer who is 1.62-meter-tall is 45 meters away form a pole. The angle of elevation of the top of the pole from his eyes is 30°. The height ( in meter) of the pole is closet to:

1066 0

  • 1
    26.8
    Correct
    Wrong
  • 2
    27.6
    Correct
    Wrong
  • 3
    26.2
    Correct
    Wrong
  • 4
    25.8
    Correct
    Wrong
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Answer : 2. "27.6"

Q:

A is 40 % more than B and B is 60% less than C. If C is 60 % more than D, then which of the following is true?

1291 0

  • 1
    C is 60 % more than B.
    Correct
    Wrong
  • 2
    B is 36 % less than D.
    Correct
    Wrong
  • 3
    D is 10.4 % more than A.
    Correct
    Wrong
  • 4
    A is 54 % less than C.
    Correct
    Wrong
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Answer : 2. "B is 36 % less than D."

Q:

The average score of 42 students in a test is 69. The ratio of the number of boys to that of girls is 10 : 11. The average score of the boys is 20% more than that of the girls. The average score of the boys is:

2131 0

  • 1
    82.8
    Correct
    Wrong
  • 2
    73.5
    Correct
    Wrong
  • 3
    75.2
    Correct
    Wrong
  • 4
    75.6
    Correct
    Wrong
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Answer : 4. "75.6"

Q:

In an office, 70% of the total number of employees are females. 80 % of the total number of employees, including 85 males, got promotion. If there are 105 female employees, then what percentage of female employees got promotion?

1542 0

  • 1
    30 %
    Correct
    Wrong
  • 2
    $$ {33 {1\over 3}}{ \%} $$
    Correct
    Wrong
  • 3
    40 %
    Correct
    Wrong
  • 4
    35 %
    Correct
    Wrong
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Answer : 2. "$$ {33 {1\over 3}}{ \%} $$"

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