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.

Pumping alone at their respective constant rates, one inlet pipe fills an empty tank to 1/2 of capacity in 3 hours and a second inlet pipe fills the same empty tank to 2/3 of capacity in 6 hours. How many hours will it take both pipes, pumping simultaneously at their respective constant rates, to fill the empty tank to capacity?

Pumping alone at their respective constant rates, one inlet pipe fills an empty tank to 1/2 of capacity in 3 hours and a second inlet pipe fills the same empty tank to 2/3 of capacity in 6 hours. How many hours will it take both pipes, pumping simultaneously at their respective constant rates, to fill the empty tank to […]

Pumping alone at their respective constant rates, one inlet pipe fills an empty tank to 1/2 of capacity in 3 hours and a second inlet pipe fills the same empty tank to 2/3 of capacity in 6 hours. How many hours will it take both pipes, pumping simultaneously at their respective constant rates, to fill the empty tank to capacity? Read the Full Article »

According to the table shown, the estimated number of home-schooled students in State A is approximately what percent greater than the number in State D?

According to the table shown, the estimated number of home-schooled students in State A is approximately what percent greater than the number in State D? A. 25% B. 55% C. 100% D. 125% E. 155% Correct Answer: D Full explanation coming soon. Send us a note if you’d like this added to the express queue!

According to the table shown, the estimated number of home-schooled students in State A is approximately what percent greater than the number in State D? Read the Full Article »

Company P had 15 percent more employees in December than it had in January. If Company P had 460 employees in December, how many employees did it have in January?

Company P had 15 percent more employees in December than it had in January. If Company P had 460 employees in December, how many employees did it have in January? A. 391 B. 400 C. 410 D. 423 E. 445 Correct Answer: B Full explanation coming soon. Send us a note if you’d like this

Company P had 15 percent more employees in December than it had in January. If Company P had 460 employees in December, how many employees did it have in January? Read the Full Article »

A retailer purchased eggs at $2.80 per dozen and sold the eggs at 3 eggs for $0.90. What was the retailer’s gross profit from purchasing and selling 5 dozen eggs? (1 dozen eggs = 12 eggs)

A retailer purchased eggs at $2.80 per dozen and sold the eggs at 3 eggs for $0.90. What was the retailer’s gross profit from purchasing and selling 5 dozen eggs? (1 dozen eggs = 12 eggs) A. $0.90 B. $2.40 C. $4.00 D. $11.30 E. $12.00 Correct Answer: C Full explanation coming soon. Send us

A retailer purchased eggs at $2.80 per dozen and sold the eggs at 3 eggs for $0.90. What was the retailer’s gross profit from purchasing and selling 5 dozen eggs? (1 dozen eggs = 12 eggs) Read the Full Article »

The price of a coat in a certain store is $500. If the price of the coat is to be reduced by $150, by what percent is the price to be reduced?

The price of a coat in a certain store is $500. If the price of the coat is to be reduced by $150, by what percent is the price to be reduced? A. 10% B. 15% C. 20% D. 25% E. 30% Correct Answer: E Full explanation coming soon. Send us a note if you’d

The price of a coat in a certain store is $500. If the price of the coat is to be reduced by $150, by what percent is the price to be reduced? Read the Full Article »