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Re: Mary persuaded \(n\) friends to donate \(\$500\) each to her election campaign, and then each of these \(n\) friends

Mary persuaded \(n\) friends to donate \(\$500\) each to her election campaign, and then each of these \(n\) friends persuaded \(n\) more people to donate \(\$500\) each to Mary’s campaign. If no one donated more than once and if there were no other donations, what was the value of \(n?\) (1) The f...


Re: Are at least \(10\) percent of the people in Country \(X\) who are \(65\) years old or older employed?

Are at least \(10\) percent of the people in Country \(X\) who are \(65\) years old or older employed? (1) In Country \(X,\) \(11.3\) percent of the population is \(65\) years old or older. (2) In Country \(X,\) of the population \(65\) years old or older, \(20\) percent of the men and \(10\) perce...


Re: On her way home from work, Janet drives through several tollbooths. Is there a pair of these toll booths that are le

On her way home from work, Janet drives through several toll booths. Is there a pair of these tollbooths that are less than 10 miles apart? (1) The first tollbooth and the last tollbooth are 25 miles apart. (2) Janet drives through 4 tollbooths on her way home from work. Answer: C Source: GMAT Prep...


Re: Of the students who eat in a certain cafeteria, each student either likes or dislikes lima beans and each student ei

Of the students who eat in a certain cafeteria, each student either likes or dislikes lima beans, and each student either likes or dislikes brussels sprouts. Of these students, 2/3 dislike lima beans; and of those who dislike lima beans, 3/5 also dislike brussels sprouts. How many of the students l...


Re: If the list price of a new car was $12,300, what was the cost of the car to the dealer?

If the list price of a new car was $12,300, what was the cost of the car to the dealer? (1) The cost to the dealer was equal to 80 percent of the list price. (2) The car was sold for $11,070, which was 12.5 percent more than the cost to the dealer. Answer: D Source: Official Guide Let x = the cost ...


Re: According to the directions on a can of frozen orange juice concentrate, 1 can of concentrate is to be mixed with 3

GMAT Prep According to the directions on a can of frozen orange juice concentrate, 1 can of concentrate is to be mixed with 3 cans of water to make an orange juice. How many 12 ounce cans of concentrate are required to prepare 200 6-ounce servings of orange juice? A. 25 B. 34 C. 50 D. 67 E. 100 OA ...


Re: A gang of criminals hijacked a train heading due south. At exactly the same time, a police car located 50 miles nort

A gang of criminals hijacked a train heading due south. At exactly the same time, a police car located 50 miles north of the train started driving south toward the train on an adjacent roadway parallel to the train track. If the train traveled at a constant rate of 50 miles per hour, and the police...


Re: Beth received 3/10 of the votes cast in a certian election. What franction of the other votes cast would she have ne

Beth received 3/10 of the votes cast in a certain election. What fraction of the other votes cast would she have needed in order to have received 1/2 of the votes cast? A. 1/5 B. 2/7 C. 3/10 D. 7/20 E. 1/2 Answer: B Source: GMAT Paper Tests Let's assign a "nice" value to the total number of votes c...


Re: The perimeter of a certain isosceles right triangle is \(16+16\sqrt2.\) What is the length of the hypotenuse of the

The perimeter of a certain isosceles right triangle is \(16+16\sqrt2.\) What is the length of the hypotenuse of the triangle? (A) \(8\) (B) \(16\) (C) \(4\sqrt2\) (D) \(8\sqrt2\) (E) \(16\sqrt2\) Answer: B Source: GMAT Prep An IMPORTANT point to remember is that, in any isosceles right triangle, th...


Re: How many integers between 324,700 and 458,600 have tens digit 1 and units digit 3?

How many integers between 324,700 and 458,600 have tens digit 1 and units digit 3? A. 10,300 B. 10,030 C. 1,353 D. 1,352 E. 1,339 Answer: E Source: GMAT Paper Tests A nice rule says: the number of integers from x to y inclusive equals y - x + 1 So, the number of integers from 324,700 to 458,600 = 4...


Re: When a certain tree was first planted, it was 4 feet tall and the height of the tree increased by a constant amount

When a certain tree was first planted, it was 4 feet tall and the height of the tree increased by a constant amount each year for the next 6 years. At the end of the 6th year, the tree was 1/5 taller than it was at the end of the 4th year. By how many feet did the height of the tree increase each y...


Re: The table above shows the number of students in a certain high school class who are boys and the number of students

2015-10-26_2106.png The table above shows the number of students in a certain high school class who are boys and the number of students in the class who are studying biology. What is the total number of students in the class? (1) Of the boys in the class, 15 are studying biology. (2) The number of ...


Re: Guy's net income equals his gross income minus his deductions. By what percent did Guy's net income change on Januar

Guy's net income equals his gross income minus his deductions. By what percent did Guy's net income change on January 1, 1989, when both his gross income and his deductions increased? (1) Guy's gross income increased by 4 percent on January 1, 1989. (2) Guy's deductions increased by 15 percent on J...


Re: The perimeter of a certain isosceles right triangle is \(16+16\sqrt2.\) What is the length of the hypotenuse of the

The perimeter of a certain isosceles right triangle is \(16+16\sqrt2.\) What is the length of the hypotenuse of the triangle? (A) \(8\) (B) \(16\) (C) \(4\sqrt2\) (D) \(8\sqrt2\) (E) \(16\sqrt2\) Answer: B Source: GMAT Prep An IMPORTANT point to remember is that, in any isosceles right triangle, th...


Re: A boat traveled upstream \(90\) miles at an average speed of \(v-3\) miles per hour and then traveled the same dista

A boat traveled upstream \(90\) miles at an average speed of \(v-3\) miles per hour and then traveled the same distance downstream at an average speed of \(v+3\) miles per hour. If the trip upstream took a half-hour longer than the trip downstream, then how many hours did it take the boat to travel...