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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
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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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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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

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