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Ejemplos Cuantitativos

Problem Solving

1)  The jewels in a certain tiara consist of diamonds, rubies, and emeralds. If the ratio of diamonds to rubies is 5⁄6 and the ratio of rubies to emeralds is 8⁄3, what is the least number of jewels that could be in the tiara?

  1. 16 %
  2. 22 %
  3. 40 %
  4. 53 %
  5. 67 %

Answer: D

2)   At a certain pizzeria, 1/8 of the pizzas sold in one week were mushroom and 1/3 of theremaining pizzas sold were pepperoni. If n of the pizzas sold were pepperoni, how many were mushroom?

  1. (3/8)n
  2. (3/7)n
  3. (7/16)n
  4. (7/8)n
  5. 3n

Answer: B

Data Suficiency

1)   If k is an integer less than 17 and k – 1 is the square of an integer, what is the value of k?

(1) k is an even number.
(2) k + 2 is the square of an integer.
  1. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
  2. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
  3. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
  4. EACH statement ALONE is sufficient.
  5. Statements (1) and (2) TOGETHER are NOT sufficient.

Answer: B

2)   A group of 49 consumers were offered a chance to subscribe to 3 magazines: A, B, and C. 38 of the consumers subscribed to at least one of the magazines. How many of the 49 consumers subscribed to exactly two of the magazines?

(1) Twelve of the 49 consumers subscribed to all three of the magazines.
(2) Twenty of the 49 consumers subscribed to magazine A.
  1. Statement 1 alone is sufficient to answer the question, but statement 2 alone is not sufficient.
  1. Statement 2 alone is sufficient to answer the question, but statement 1 alone is not sufficient.
  1. Both statements together are needed to answer the question, but neither statement alone is sufficient.
  1. Either statement by itself is sufficient to answer the question.
  1. Not enough facts are given to answer the question.

Answer: E