Admission Tests Admission Tests Certifications GMAT-QUANTITIVE Questions & Answers

• Question 471:

  A photo-mat shop charges $0.55 for the first photo inside a film, and 40% cents less for each additional photo. How many photos can we develop with $52.58 if each film contains 36 photos?

  A. 4 films and 12 photos

  B. 5 films and 6 photos

  C. 5 films and 14 photos

  D. 6 films and 4 photos

  E. 6 films and 28 photos

  Correct Answer: A

  Each film costs: 0.55 + 35 x (60% of 0.55 $ is 0.33) = 0.55 + 11.55 = 12.1$ per film.

  52.58$ = 4 x 12.1$ + 4.18$.

  4.18$ - 0.55$ = 3.63$. 3.63$/0.33$ = 11 All together gives 4 films + 12 photos.

• Question 472:

  If 0.06x = 52.2, then x =

  A. 540

  B. 622

  C. 830

  D. 870

  E. 920

  Correct Answer: D

  Because the answer choices are so far apart, you can ballpark this problem. Multiply both sides by 100 to

  eliminate the decimal points:

  6x = 5220, divide both sides by 6.

  x = 870.

• Question 473:

  A taxi company costs $2.75 for the first quarter-mile and 12.5 cents for each additional quarter mile. What is the maximum distance you can travel with $6.50?

  A. 4 miles

  B. 5 3/4 miles

  C. 6 1/2 miles

  D. 7 3/4 miles

  E. 8 1/4 miles

  Correct Answer: D

  Since you spend $2.75 for the first quarter mile, you have $3.75 (6.5 ?2.75) left to spend on ?mile intervals. $3.75 divided by $.125 equals 30 quarter miles. The 30 miles, plus the initial quarter mile, makes a total of 31quarter miles. 31 quarter-miles equal 7.75 miles.

• Question 474:

  If 0.45x = 101.25, then x =

  A. 180

  B. 225

  C. 328

  D. 444

  E. 448

  Correct Answer: B

  Because the answer choices are so far apart, you can ballpark this problem. Multiply both sides by 100 to

  eliminate the decimal points:

  45x = 10125, divide both sides by 45.

  x = 225.

• Question 475:

  If 0.01z = 9.99, then z =

  A. 99.9

  B. 999.9

  C. 999

  D. 9999.9

  E. 9999

  Correct Answer: C

  Because the answer choices are so far apart, you can ballpark this problem. Multiply both sides by 100 to

  eliminate the decimal points:

  z = 999.

• Question 476:

  A windmill is taking advantage of strong air currents in order to produce electrical energy. On a typical day the wind speed is around 20 mph and in that speed the windmill produces 800 kw/h (kilowatts per hour). On a stormy day a windmill produces 20% more energy. How much kw/h can three windmills produce in two hours on a stormy day?

  A. 2880.

  B. 4860.

  C. 5780.

  D. 5760.

  E. 6380.

  Correct Answer: D

  On a stormy day, a windmill will produce 20% more energy. 20% of 800 is 160, so each windmill will give out 960 kw/h. Three windmills will give 3 x 960 = 2880, which is answer (a), but we want two hours so the answer is 2880 x 2 = 5760.

• Question 477:

  If 0.22z = 118.8, then z =

  A. 540

  B. 622

  C. 830

  D. 991

  E. 1000

  Correct Answer: A

  Because the answer choices are so far apart, you can ballpark this problem. Multiply both sides by 100 to

  eliminate the decimal points:

  22z = 11880, divide both sides by 22.

  z = 540.

• Question 478:

  A Super-Jet airplane is flying at an average speed of 500 miles per hour. The average speed of a Turbo-Prop airplane is 15% lower than that of a Super-Jet. How long will it take a Turbo-Prop airplane to fly 950 miles?

  A. 2 hours.

  B. 1 hour and 30 minutes.

  C. 3 hours and 15 minutes.

  D. 2 hours and 24 minutes.

  E. 4 hours.

  Correct Answer: A

  The average speed of a Turbo-Prop airplane is 85% of that of a Super-Jet airplane, meaning 425 mph. (15 % is 3/20 fraction, so 17/20 * 500 is 425).

  Traveling at 425 mph, it would take the airplane 2 hours to travel 950 miles.

• Question 479:

  If the sum of six numbers is between 135 and 164, then the average (arithmetic mean) of the six numbers could be which of the following?

  A. 15.4.

  B. 20.5.

  C. 25.5.

  D. 31.25.

  E. 32.5.

  Correct Answer: C

  Define X as the sum of all the six numbers, 135 < X < 164. The average of the six numbers, using the average formula, is X/6. Divide both sided of the equation by 6: 135/6 < X/6 < 164/6 22.5 < X/6 < 27.33. The average has to be in that range and therefore the only answer could be C.

• Question 480:

  M.A.S

  (Most Affordable Speed) is defined as the speed where the fuel consumption of a car is the lowest. The average family car consumes 3 liters of fuel per 36 kilometers at the M.A.S with only one passenger (the driver). A pickup truck consumes twice as much as a family car does. Assuming the fuel consumption of both cars rises by % of the original consumption for each additional passenger, how many km per litter would a pickup truck do if the driver has three additional passengers?

  A.

  10 km.

  B.

  5.8 km.

  C.

  6 km.

  D.

  5.4 km.

  E.

  4 km.

  Correct Answer: D

  This is a question with a lot of dispensable text, it teaches us to focus on relevant information only. A family car consumes 1 liter for 12 Km, a pickup truck consumes twice as much, 1 liter for 6 Km. There are 3 additional passengers so the consumption rises by 10%, .