Andrew Geller

Andrew Geller is a top GMAT tutor based out of New York City. Throughout his career he has successfully taught people from many different backgrounds, countries, and starting scores.

Mark and Ann together were allocated n boxes of cookies to sell for a club project. Mark sold 10 boxes less than n and Ann sold 2 boxes less than n. If Mark and Ann have each sold at least one box of cookies, but together they have sold less than n boxes, what is the value of n?

Mark and Ann together were allocated n boxes of cookies to sell for a club project. Mark sold 10 boxes less than n and Ann sold 2 boxes less than n. If Mark and Ann have each sold at least one box of cookies, but together they have sold less than n boxes, what is the value of n? A. 11 B. 12 C.

Mark and Ann together were allocated n boxes of cookies to sell for a club project. Mark sold 10 boxes less than n and Ann sold 2 boxes less than n. If Mark and Ann have each sold at least one box of cookies, but together they have sold less than n boxes, what is the value of n? Read the Full Article »

In a recent election, Ms. Robbins received 8,000 votes cast by independent voters, that is, voters not registered with a specific political party. She also received 10 percent of the votes cast by those voters registered with a political party. If N is the total number of votes cast in the election and 40 percent of the votes cast were cast by independent voters, which of the following represents the number of votes that Ms. Robbins received?

In a recent election, Ms. Robbins received 8,000 votes cast by independent voters, that is, voters not registered with a specific political party. She also received 10 percent of the votes cast by those voters registered with a political party. If N is the total number of votes cast in the election and 40 percent of the

In a recent election, Ms. Robbins received 8,000 votes cast by independent voters, that is, voters not registered with a specific political party. She also received 10 percent of the votes cast by those voters registered with a political party. If N is the total number of votes cast in the election and 40 percent of the votes cast were cast by independent voters, which of the following represents the number of votes that Ms. Robbins received? Read the Full Article »

If x and y are positive numbers such that x + y = 1, which of the following could be the value of 100x + 200y?

If x and y are positive numbers such that x + y = 1, which of the following could be the value of 100x + 200y? I.80 II.140 III.199 A. II only B. III only C. I and II D. I and III E. II and III Correct Answer: E Full explanation coming soon. Send us a note if you’d like this added to

If x and y are positive numbers such that x + y = 1, which of the following could be the value of 100x + 200y? Read the Full Article »

The product of two negative numbers is 160. If the lesser of the two numbers is 4 less than twice the greater, what is the greater number?

The product of two negative numbers is 160. If the lesser of the two numbers is 4 less than twice the greater, what is the greater number? A. -20 B. -16 C. -10 D. -8 E. -4 Correct Answer: D Full explanation coming soon. Send us a note if you’d like this added to the

The product of two negative numbers is 160. If the lesser of the two numbers is 4 less than twice the greater, what is the greater number? Read the Full Article »