A certain river has current of 3 miles per hour. A boat takes twice as long to travel upstream between two points as it does to travel downstream between the same two points. What is the speed of the boat in still water ?

A) 3 miles per hours
B) 6 miles per hours
C) 9 miles per hours
D) 12 miles per hours
E) The speed cannot be determined from the given ingformation

A group of 8 friends want to play doubles tennis. How many different ways can the group be divided into 4 teams of 2 people?

A. 420
B. 2520
C. 168
D. 90
E. 105

If y ? 3 and 3x/y is a prime integer greater than 2, which of the following must be true?

I .  x = y
II.  y = 1
III.  x and y are prime integers.

(A) None
(B) I only
(C) II only
(D) III only
(E) I and II

The number of different words ending and beginning with a consonants which can be made out of the letters of the word EQUATION is

a) 5200

b) 4320

c) 1295

d) 3000

e0 4200

Rodrick mixes a martini that has a volume of ‘n’ ounces having 40% Vermouth and 60% Gin by volume. He wants to change it so that the martini is 25% Vermouth by volume. How many ounces of Gin must he add?

A) n/6
B) n/3
C) 3n/5
D) 5n/6
E) 8n/5

What is the standard deviation of Q, a set of consecutive integers?

(1) Q has 21 members.
(2) Q has 20 members

A) Statement 1 alone is sufficient but statement 2 alone is not sufficient to answer the question asked.
B) Statement 2 alone is sufficient but statement 1 alone is not sufficient to answer the question asked.
C) Both statements 1 and 2 together are sufficient to answer the question but neither statement is sufficient alone.
D) Each statement alone is sufficient to answer the question.
E) Statements 1 and 2 are not sufficient to answer the question asked and additional data is needed to answer the statements.

A man lent $2000, part of this at 4% and the rest at 6% per annum simple interest. The whole annual interest amounted to $92. How much did he lend at 6%?

a) $1000
b) $900
c) $800
d) $700
e) $600

A string of 10 lightbulbs is wired in such a way that if any individual lightbulb fails, the entire string fails. If for each individual lightbulb the probability of failing during time period T id 0.06, what is the probability that the string of lightbulbs will fail during time period T?

A.0.06

B.(0.06)^10

C.1-(0.06)^10

D.(0.94)^10

E.1-(0.94)^10

A mixture of milk and water measures 60 gallons. It contains 20% water. How many gallons of water should be added to it so that water may be 25%?

a) 6 gallons
b) 4 gallons
c) 8 gallons
d) 10 gallons
e) 5 gallons

A particular shade of green is formed by mixing 30% of yellow paint to 70 % blue paint by volume. How many gallons of yellow paint should be added to 70 gallons of this green paint to reduce the percentage of blue paint by 10 %.

a) 7
b) 23/3
c) 10
d) 32/3
e) 35/3

A 30% solution of barium chloride is mixed with 10 grams of water to form a 20% solution. How many grams of original solution did we start with ?

A) 10
B) 15
C) 20
D) 25
E) 30

If the degree measure of one of the interior angles of a triangle is 30, what is the length of the longest side?

(1) The length of the side opposite the 30 angle is 3.
(2) The degree measure of one of the interior angles is 60.

A if statement (1) BY ITSELF is sufficient to answer the question but statement (2) is not.
B if statement (2) BY ITSELF is sufficient to answer the question but statement (1) is not.
C if both statements (1) and (2) when taken TOGETHER are sufficient to answer the question but NEITHER statement taken alone is sufficient.
D if EITHER statement taken ALONE is sufficient to answer the question.
E if the two statements, even when taken together, are NOT sufficient to answer the question.

Machine M can produce x units in 3 / 4 of the time it takes machine N two produce x units. Machine N can produce x units in 2 / 3 the time it takes machine O two produce x units. If all three machines are working simultaneously, what fraction of the total output is produced by machine N?

(A) 1 / 2
(B) 1 / 3
(C) 4 / 13
(D) 8 / 29
(E) 6 / 33

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In 1980, approximately what fraction of the cost to the consumer for the production of 6 ounces of frozen orange juice went to the farmer?
(A) 3/11
(B) 1/3
(C) 4/9
(D) 5/9
(E) 3/5

4th root of 496 is between

(A) 3 and 4
(B) 4 and 5
(C) 5 and 6
(D) 6 and 7
(E) 7 and 8

If x, y, and k are positive numbers such that (x/(x+y) (10) + (y/(x+y) (20) = k and if x < y, which of the following could be the value of k?

A) 10
B) 12
C) 15
D) 18
E) 30

At a certain business school, 400 students are members of the sailing club, the wine club, or both. If 200 students are members of the wine club and 50 students are members of both clubs, what is the probability that a student chosen at random is a member of the sailing club?

A. 1/2
B. 5/8
C. 1/4
D. 3/8
E. 3/5

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In the diagram above, AB=CD, From this we can deduce that:

A) AB is parallel to CD.
B) AB is perpendicular to BD.
C) AC=BD
D) Angle ABD equals angle BDC.
E) Triangle ABD is congruent to triangle ACD

A forty gallons of gas is required to travel 400 miles using a 1200 CC engine. If the capacity of the engine is directly varying with the volume of gas, then how many gallons of gas required to travel 600 miles using 1500 CC engine ?

A) 20
B) 27.5
C) 37.5
D) 42.5
E) 75

Now Vote for best choice here

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Vertices of a quadrilateral ABCD are A(1,1), B(5,6), C(10,10) and D(6,5). What is the shape of the quadrilateral?

A. Square
B. Rectangle but not a square
C. Rhombus
D. Parallelogram but not a rhombus
E. None of these