Try Practice GRE Quantitative Questions

1. In July the price of a stock increased by 10 percent. In August, it declined by 20 percent. If in September the price increased 10 percent, by what percentage of the original July price has the stock changed in price from the start of July to the end of September?

(A) 0 percent
(B) 3.2 percent
(C) 4.4 percent
(D) 20 percent
(E) 40 percent

2. Which of the following is 850 percent greater than 8 x 10³?

(A) 8.5 x 10³
(B) 6.4 x 10⁴
(C) 6.8 x 10⁴
(D) 7.6 x 10⁴
(E) 1.6 x 10⁵

3. A vending machine dispenses gumballs in a regularly repeating cycle of ten different colors. If a quarter buys 3 gumballs, what is the minimum amount of money that must be spent before three gumballs of the same color are dispensed?

(A) $1.00
(B) $1.75
(C) $2.00
(D) $2.25
(E) $2.50

4. If a dealer had sold a stereo for $600, he would have made a 20% profit. Instead, the dealer sold it for a 40% loss. At what price was the stereo sold?

(A) $300
(B) $315
(C) $372
(D) $400
(E) $440

5. A butcher buys 240 kilograms of beef for $380. If 20 percent of the beef is unusable, at approximately what average price per kilogram must he sell the rest of the beef in order to make a profit of 25 percent?

(A) $2.30
(B) $2.40
(C) $2.45
(D) $2.47
(E) $2.55