Free GMAT GMAT SECTION 2: QUANTITATIVE Exam Braindumps (page: 29)

John spent a total of $135 on baseball tickets. The price of a ticket is either $12 for the field seats or $5 for the balcony. What is the minimum amount of dollars he could have spent for the $12 tickets?

  1. $48
  2. $60
  3. $84
  4. $96
  5. $120

Answer(s): B

Explanation:

Since John spent all of the $135 on the tickets, their prices must sum up to $135. The Minimum amount spent for the $12 tickets, is the smallest amount that is divisible by 12, and still leaves an amount divisible by 5. $60 is the smallest amount both divisible by 12 and leaving $135-$60=$75, which is divisible by $5.



One of the solutions of the equation X2-X-k=5, is –3. What is the other solution of the equation?

  1. 4
  2. -4
  3. 5
  4. 6
  5. 24

Answer(s): A

Explanation:

First, plug in the solution –3 to find the value of k: (-3)2-(-3)- k-5=0,k=7. Then solve: X2 –X-7-5=0 to find the second solution: X=4.



What is the sum of all even integers between 30 and 50, inclusive?

  1. 640
  2. 540
  3. 480
  4. 440
  5. 240

Answer(s): D

Explanation:

The sum of the even integers between 30 and 50 inclusive can be calculated using the product of the number of integers by their average. The average of a fixed-difference sequence of numbers can be calculated as the average of the largest and the smallest numbers: . We remember that between 30 and
49, inclusive, there are 20 numbers of which half are even and half odd. Add 1 (the number 50) to the 10 even numbers to receive a total of 11 even integers, multiply it by the average to get the sum: .



The price (p) of product X depends on the yearly number of units produced (n) according to the following formula: p= . What will the estimated price per unit be next year if an estimated number of 260 units will be sold?

  1. 24
  2. 26
  3. 50
  4. 60
  5. 240

Answer(s): A

Explanation:

Plug the number of units into the given formula to find the price per unit: .



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