Admission Tests Admission Tests Certifications GMAT-QUANTITIVE Questions & Answers

• Question 361:

  A and B are numbers between 0 and 9. When multiplying 56 by another number the result is 1AB. which of the following can represent A?

  A. 8.

  B. 2.

  C. 6.

  D. 4.

  E. 5.

  Correct Answer: C

  We have two choices: 56 x 2 = 112 or 56 x 3 = 168. Therefore A could be 1 or 6. The answer is A = 6.

• Question 362:

  Q and R are numbers between 0 and 9. When multiplying 71 by another double-digit number the result is 7PQ. Which of the following could represent Q?

  A. 1.

  B. 8.

  C. 3.

  D. 5.

  E. 4.

  Correct Answer: A

  We have two choices: 71 x 10 = 710 or 71 x 11 = 781. Therefore Q can be 0 or 1. The answer is A.

• Question 363:

  A wolf eats 5.5 Kg of meat in 2 days. A baby tiger eats 3 Kg of meat in 4 days. How much meat can the two combined eat in three days?

  A. 10.

  B. 8.

  C. 9.

  D. 7.

  E. 6.

  Correct Answer: C

  A wolf eats 2.25 Kg a day; a baby tiger eats 0.75 Kg a day. Together they eat 3 Kg of meat every day, in three days they will eat 9 Kg of meat.

• Question 364:

  20 beavers, working together in a constant pace, can build a dam in 3 hours.

  How many hours will it take 12 beavers that work at the same pace, to build the same dam?

  A. 5.

  B. 2.

  C. 8.

  D. 4.

  E. 6.

  Correct Answer: A

  20 beavers worked 3 hours; therefore 60 hours of work were needed to build the dam. 60 hours / 12 beavers = 5 hours of work to complete the same dam.

• Question 365:

  At 12:10 o'clock Bill leaves point A towards point B at a speed of 30 Km/h.

  At 13:40 o'clock Richi leaves from the same point towards point B also, but at a speed of 60 Km/h. At what time will Richi passes over Bill?

  A. 14:40.

  B. 15:10.

  C. 16:10.

  D. 15:40.

  E. 15:30.

  Correct Answer: B

  At 13:40, Bill has already moved (30 x 1.5) 45 Km.

  Their relative speed is (60 -30) 30 Km/h; therefore it would take (45 / 30) 1.5 hours to close the gap

  between the two. 13:40 + 90 minutes are 15:10.

• Question 366:

  James can eat 25 marshmallows is 20 minutes. Dylan can eat 25 in one hour.

  In how much time will the two eat 150 marshmallows?

  A. 40 minutes.

  B. 1 hour and 30 minutes.

  C. 1 hour.

  D. 1 hour and 40 minutes.

  E. 2 hours and 15 minutes.

  Correct Answer: C

  Calculate each of their output in one hour: James can eat 75 and Dylan can eat only 25. Together they can eat 100 marshmallows in 1 hour. It would take those 1.5 hours to eat 150 marshmallows.

• Question 367:

  Two ants are moving from their farms towards each other. Ant A is moving at a speed of 9 Cm per hour and ant B is moving at a speed of 6 Cm per hour. If the farms are 60 Cm away from each other, what will be the distance ant A travels until meeting ant B?

  A. 18.

  B. 24.

  C. 36.

  D. 42.

  E. 48.

  Correct Answer: C

  The ants are moving towards each other, therefore adding their speeds will represent the speed that they are moving towards one another. 60 Cm / (9 + 6) = 4 hours. The distance that ant A will travel in 4 hours is 4 x 9 = 36 Cm.

• Question 368:

  The running speed of a horse is three times faster than the jogging of a donkey.

  If a horse is running for 4 hours and a donkey is jogging for 3 hours, what is the horse's speed (in Km/h) if the sum of their distances is 45 Km?

  A. 15.

  B. 9.

  C. 3.

  D. 12.

  E. 8.

  Correct Answer: B

  X is the donkey's speed and 3X is the horse's speed. The total amount of distance is Equal to 45 and to 3X x 4 + X x 3 = 15X ---> X = 3, the speed of a horse is 9.

• Question 369:

  A car was driving at 60 Km/h for 20 minutes, and then at 90Km/h for another 40 minutes. What was its average speed?

  A. 80.

  B. 75.

  C. 70.

  D. 65.

  E. 54.

  Correct Answer: A

  The average speed is equal to: (Total distance)/(Total time) = (60 x 1/3 + 90 x 2/3)/1 = 80 Km/h.

• Question 370:

  The distance from Steve's house to work is 30 Km. On the way back Steve drives twice as fast as he did

  on the way to work. Altogether, Steve is spending 6 hours a day on the roads.

  What is Steve's speed on the way back from work?

  A. 10.

  B. 20.

  C. 5.

  D. 14.

  E. 15.

  Correct Answer: E

  Steve's speed on the way back is double the speed to work therefore it takes him half the time to return home ---> Divide 6 hours by 1:2 ratio, the time it takes him to get home is 2 hours and the time driving to work is 4 hours. 30 Km in 2 hours is 15 Km per hour.