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Latest questions - II

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Latest questions - II [#permalink] New post 29 Apr 2010, 21:54
I had to translate the questions in English. Hope the questions are clear.
Please show your work if you can. Thanx in advance.

(1)
The library has new and used books: a new book is $13, used book is $5. The profit from the cost of new book is 30% and from the used book is 100%. If a person pays $67 for the books, what is the total profit?


(2)
The sum of money that two people, A and B, have is $9,000. A has 3 times more + 300 than B.
How much does A have? answer: $6,650


(3)
100cm=1m, 200 cm^2 = how much m^2


(4)
{7^(-2)+7^6} /7^4 = ?


(5) pls show your work
(5-1/5)^2(5+1/5)^2=?


(6)
There are 100 employees in a company. 64% have salary pays more than $4000, 60% have salary pays less than $5000, 11% have salary of $4300, and 3% have $4900. What is the median of the salary?

--- D/S problems

(7)
xyz=0?
1) yz>-yz
2) y=z+1

(8)
2,4, 8, 10, and x, what is x?
1) x≠16
2) mean = median


(9)
Is |X| + |Y| = 0?
1) |X| + 2|Y| = 0
2) |Y| + 2|X| = 0


(10)
m can be expressed as a+b+c (a,b,c are consecutive numbers) or x*y*z (consecutive #s as well).
Is 'm' divisible by 5?
1) the remainder is 1 when ‘a’ is divided by 5
2) the reaminder is 1 when x is divided by 5


(11)
N can be expressed as N=x+y+z. Is N divided by 10?
1) x+y is a multiple of 10
2) y is a multiple of 10


(12)
At 1pm, a person started to fill the tank with the water at the rate of 600 Liter/hour, and stopped filling the tank when the tank was filled to 2,500 Liters of water. Was the tank originally had 1,600 Liters of water at 1pm to start with?
1) The tank had 250 Liters of water at 4pm
2) The tank had 210 liters of water at 2pm
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Re: Latest questions - II [#permalink] New post 04 May 2010, 22:28
What is the source of these questions?? Also, was this post moved to some where else, as no one replied it??
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Re: Latest questions - II [#permalink] New post 08 May 2010, 03:43
they are from the recent exams, so no official answers are available
Re: Latest questions - II   [#permalink] 08 May 2010, 03:43
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