Practice Question and Answer

Q:

The perimeter of a square is equal to the perimeter of a rectangle, and the latter has a width of 12 cm. The area of the square is 400 cm. Find the area of the rectangle.

881 0

  • 1

    412 cm2

    Correct
    Wrong
  • 2

    394 cm2

    Correct
    Wrong
  • 3

    324 cm2

    Correct
    Wrong
  • 4

    336 cm2

    Correct
    Wrong
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Answer : 4. "

336 cm2

"

Q:

If $$ A = {1\over 2}+{1\over 3}×{1\over 4}÷{1\over 5}-{1\over 6}$$ and $$B={1\over 2}÷{1\over 3}×{1\over 4}+{1\over 5} $$ , then what is the value of A - B?

624 0

  • 1
    $${17\over 20}$$
    Correct
    Wrong
  • 2
    $${9\over 20}$$
    Correct
    Wrong
  • 3
    $${7\over 40}$$
    Correct
    Wrong
  • 4
    $${1\over 5}$$
    Correct
    Wrong
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Answer : 3. " $${7\over 40}$$"

Q:

Bobby and Billy can complete a job in 28 days and 20 days, respectively. They work together for 5 days, after which Billy leaves the job. In how many days did Bobby alone complete the rest of the job?

1035 0

  • 1
    15 days
    Correct
    Wrong
  • 2
    20 days
    Correct
    Wrong
  • 3
    12 days
    Correct
    Wrong
  • 4
    16 days
    Correct
    Wrong
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Answer : 4. "16 days"

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