Free GMAT GMAT SECTION 2: QUANTITATIVE Exam Braindumps (page: 20)

Given a spinner with four sections of equal size labeled A, B, C, and D, what is the probability of NOT getting an A after spinning the spinner two times?

  1. 9/16
  2. 1/8
  3. 1/4
  4. 1/2
  5. 15/16

Answer(s): A

Explanation:

By spinning the spinner two times, the probability of not getting an A is .



A case of 12 rolls of paper towels sells for $9. The cost of one roll sold individually is $1. What is the percent of savings per roll for the 12-roll package over the cost of 12 rolls purchased individually?

  1. 9%
  2. 11%
  3. 15%
  4. 25%
  5. 90%

Answer(s): D

Explanation:

If sold by the case, each individual roll cost $.75 (.75). To find the percent of savings, compare the savings to the cost of a roll sold individually. = 0.25 = 25%.



How many different committees can be formed from a group of two women and four men if three people are on the committee and at least one member must be a woman?

  1. 6
  2. 8
  3. 10
  4. 12
  5. 16

Answer(s): E

Explanation:

If at least one member must be a woman, the committee will have either one woman and two men or two women and one man. Use combinations because the order does not matter.
Choosing one woman and two men: 2C1 × 4C2 = .
Choosing two women and one man: 2C2 × 4C1 = .
Since both situations would satisfy the requirement that at least one member is a woman, add the combinations. 12 + 4 = 16 total committees



Susan spent one-third of her money on books and half of the remaining money on clothing. She then spent three-fourths of what she had left on food. She had $5 left over. How much money did she start with?

  1. $60
  2. $80
  3. $120
  4. $160
  5. $180

Answer(s): A

Explanation:

Start with the money she had left and work backwards. If she had $5 left over, and had just spent three-fourths of her money on food, then $5 must be one-fourth of her money. Before buying food she must have had 5 × 4 = $20. She then spent half of her money on clothes; therefore, $20 was half of her money, giving her $40 at this point. She then spent one-third of her money on books and had $40 left over. If $40 represents two-thirds of her money, then $60 must be the amount she began with.



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