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.

After driving to a riverfront parking lot, Bob plans to run south along the river, turn around, and return to the parking lot, running north along the same path. After running 3.25 miles south, he decides to run for only 50 minutes more. If Bob runs at a constant rate of 8 minutes per mile, how many miles farther south can he run and still be able to return to the parking lot in 50 minutes?

After driving to a riverfront parking lot, Bob plans to run south along the river, turn around, and return to the parking lot, running north along the same path. After running 3.25 miles south, he decides to run for only 50 minutes more. If Bob runs at a constant rate of 8 minutes per mile, […]

After driving to a riverfront parking lot, Bob plans to run south along the river, turn around, and return to the parking lot, running north along the same path. After running 3.25 miles south, he decides to run for only 50 minutes more. If Bob runs at a constant rate of 8 minutes per mile, how many miles farther south can he run and still be able to return to the parking lot in 50 minutes? Read the Full Article »

If mn ≠ 0 and 25 percent of n equals 37(1/2) percent of m, what is the value of 12n/m?

If mn ≠ 0 and 25 percent of n equals 37(1/2) percent of m, what is the value of 12n/m? A. 18 B. 32/3 C. 8 D. 3 E. 9/8 Correct Answer: A Full explanation coming soon. Send us a note if you’d like this added to the express queue! You’ll find tons of practice questions, explanations for GMAT Official Guide questions, and

If mn ≠ 0 and 25 percent of n equals 37(1/2) percent of m, what is the value of 12n/m? Read the Full Article »

If 1/3 of the total number of marbles in the three bags listed in the table above are blue, how many marbles are there in bag Q?

  If 1/3 of the total number of marbles in the three bags listed in the table above are blue, how many marbles are there in bag Q? A. 5 B. 9 C. 12 D. 23 E. 46 Correct Answer: B Full explanation coming soon. Send us a note if you’d like this added to the express queue!

If 1/3 of the total number of marbles in the three bags listed in the table above are blue, how many marbles are there in bag Q? Read the Full Article »

Last year Joe grew 1 inch and Sally grew 200 percent more than Joe grew. How many inches did Sally grow last year?

Last year Joe grew 1 inch and Sally grew 200 percent more than Joe grew. How many inches did Sally grow last year? A. 0 B. 1 C. 2 D. 3 E. 4 Correct Answer: D Full explanation coming soon. Send us a note if you’d like this added to the express queue! You’ll find tons

Last year Joe grew 1 inch and Sally grew 200 percent more than Joe grew. How many inches did Sally grow last year? Read the Full Article »