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 the mass of 1 cubic centimeter of a certain substance is 7.3 grams, what is the mass, in kilograms, of 1 cubic meter of this substance? (1 cubic meter = 1,000,000 cubic centimeters; 1 kilogram = 1,000 grams)

If the mass of 1 cubic centimeter of a certain substance is 7.3 grams, what is the mass, in kilograms, of 1 cubic meter of this substance? (1 cubic meter = 1,000,000 cubic centimeters; 1 kilogram = 1,000 grams) A. 0.0073 B. 0.73 C. 7.3 D. 7,300 E. 7,300,000 Correct Answer: D Full explanation coming

If the mass of 1 cubic centimeter of a certain substance is 7.3 grams, what is the mass, in kilograms, of 1 cubic meter of this substance? (1 cubic meter = 1,000,000 cubic centimeters; 1 kilogram = 1,000 grams) Read the Full Article »

To rent a tractor, it costs a total of x dollars for the first 24 hours, plus y dollars per hour for each hour in excess of 24 hours. Which of the following represents the cost, in dollars, to rent a tractor for 36 hours?

To rent a tractor, it costs a total of x dollars for the first 24 hours, plus y dollars per hour for each hour in excess of 24 hours. Which of the following represents the cost, in dollars, to rent a tractor for 36 hours? A. x+12y B. x+36y C. 12x+y D. 24x+12y E. 24x+36y

To rent a tractor, it costs a total of x dollars for the first 24 hours, plus y dollars per hour for each hour in excess of 24 hours. Which of the following represents the cost, in dollars, to rent a tractor for 36 hours? Read the Full Article »

If the relations shown hold for the operation ⊕ and the numbers m, n, p, q, and r, then [(m⊕p)⊕q]⊕p=

m⊕p=n n⊕r=m n⊕q=q p⊕q=p q⊕p=r If the relations shown hold for the operation ⊕ and the numbers m, n, p, q, and r, then [(m⊕p)⊕q]⊕p= A. m B. n C. p D. q E. r Correct Answer: E Full explanation coming soon. Send us a note if you’d like this added to the express queue! You’ll find tons of

If the relations shown hold for the operation ⊕ and the numbers m, n, p, q, and r, then [(m⊕p)⊕q]⊕p= Read the Full Article »

If xy ≠ 0 and x²y² − xy = 6, which of the following could be y in terms of x?

If xy ≠ 0 and x2y2 − xy = 6, which of the following could be y in terms of x? I.1/2x II.-(2/x) III.3/x A. I only B. II 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 the express queue! You’ll

If xy ≠ 0 and x²y² − xy = 6, which of the following could be y in terms of x? Read the Full Article »