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Difficult Math Question #57 - Arithmetic

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800guy Master | Next Rank: 500 Posts Default Avatar
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Difficult Math Question #57 - Arithmetic

Post Fri Nov 17, 2006 10:36 am
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    There are three kinds of business A, B and C in a company. 25 percent of the total revenue is from business A; t percent of the total revenue is from B, the others are from C. If B is $150,000 and C is the difference of total revenue and 225,000, what is t?

    A.50
    B.70
    C.80
    D.90
    E.100

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    kulksnikhil Senior | Next Rank: 100 Posts Default Avatar
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    Post Sat Nov 18, 2006 9:54 pm
    800guy wrote:
    There are three kinds of business A, B and C in a company. 25 percent of the total revenue is from business A; t percent of the total revenue is from B, the others are from C. If B is $150,000 and C is the difference of total revenue and 225,000, what is t?

    A.50
    B.70
    C.80
    D.90
    E.100
    If C's revenue is Difference of total and $225000, then A + B must be 225000.

    Given B as 150,000, A's revenue will be $75000.

    If 25% of revenue is $75000 then. $150,000 i.e. t% is 50%

    Answer is A

    800guy Master | Next Rank: 500 Posts Default Avatar
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    Post Sun Nov 19, 2006 2:58 pm
    OA:

    Let the total revenue be X.

    So X= A + B+ C

    which is X= 1/4 X+ 150 + (X-225)

    4X= X+ 600 + 4X -900

    Solving for X you get X= 300

    And 150 is 50% of 300 so the answer is 50 % (A)

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