Practice Question and Answer

Q:

After interchanging the given two signs, what will be the value of the following expression?

× And ÷

20 + 5 ÷ 6 × 2 – 5

757 0

  • 1
    30
    Correct
    Wrong
  • 2
    35
    Correct
    Wrong
  • 3
    25
    Correct
    Wrong
  • 4
    40
    Correct
    Wrong
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Answer : 1. "30 "

Q:

A man can row downstream at a speed of 15 km/h and upstream at 11 km/h. Find his speed in still water and the speed of the current, respectively. [Give both your answers in km/h]

1007 0

  • 1
    13 ; 5
    Correct
    Wrong
  • 2
    11 ; 4
    Correct
    Wrong
  • 3
    13 ; 2
    Correct
    Wrong
  • 4
    13 ; 6
    Correct
    Wrong
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Answer : 3. "13 ; 2 "

Q:

 A can do a piece of work alone in 30 days. B is 25% less efficient than A, while C is $$33{1\over 3}$$ % more efficient than B. In how many days can A, B and C, working together, complete the work?

886 0

  • 1
    $${150\over 11}$$ days
    Correct
    Wrong
  • 2
    $${120\over 11}$$ days
    Correct
    Wrong
  • 3
    $${140\over 11}$$ days
    Correct
    Wrong
  • 4
    $${130\over 11}$$ days
    Correct
    Wrong
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Answer : 2. "$${120\over 11}$$ days"

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