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.

If x, y, and z are three-digit positive integers and if x = y + z, is the hundreds digit of x equal to the sum of the hundreds digits of y and z?

If x, y, and z are three-digit positive integers and if x = y + z, is the hundreds digit of x equal to the sum of the hundreds digits of y and z? (1) The tens digit of x is equal to the sum of the tens digits of y and z. (2) The […]

If x, y, and z are three-digit positive integers and if x = y + z, is the hundreds digit of x equal to the sum of the hundreds digits of y and z? Read the Full Article »

An object thrown directly upward is at a height of h feet after t seconds, where h = -16 (t -3)^2 + 150. At what height, in feet, is the object 2 seconds after it reaches its maximum height?

An object thrown directly upward is at a height of h feet after t seconds, where h = -16 (t -3)^2 + 150. At what height, in feet, is the object 2 seconds after it reaches its maximum height? A. 6 B. 86 C. 134 D. 150 E. 214 Correct Answer: B Full explanation coming

An object thrown directly upward is at a height of h feet after t seconds, where h = -16 (t -3)^2 + 150. At what height, in feet, is the object 2 seconds after it reaches its maximum height? Read the Full Article »

The hypotenuse of a right triangle is 10 cm. What is the perimeter, in centimeters, of the triangle?

The hypotenuse of a right triangle is 10 cm. What is the perimeter, in centimeters, of the triangle? (1) The area of the triangle is 25 square centimeters. (2) The 2 legs of the triangle are of equal length. A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. B. Statement (2)

The hypotenuse of a right triangle is 10 cm. What is the perimeter, in centimeters, of the triangle? Read the Full Article »