GMAT Question of the Day (Sep. 30): Arithmetic and Critical Reasoning

By - Sep 30, 02:00 AM Comments [1]

Math (DS)

If x and y represent digits of a two digit number divisible by 3, is the two digit number less than 50?

1. Sum of the digits is a multiple of 18
2. Product of the digits is a multiple of 9

Question Discussion & Explanation
Correct Answer - A - (click and drag your mouse to see the answer)

 

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Verbal (CR)

In order to save money, some of Company X’s manufacturing plants converted from oil fuel to natural gas last year, when the cost of oil was more than the cost of natural gas. Because of a sudden, unexpected shortage, however, natural gas now costs more than oil, the price of which has fallen steeply over the past year. The cost of conversion back to oil would more than negate any cost savings in fuel. So Company X’s fuel costs this year will be significantly higher than they were last year.

Which of the following is an assumption on which the argument above depends?

(A) Company X does not have money set aside for the increased costs of fuel.
(B) The increase in the cost of fuel cannot be offset by reductions in other operating expenses.
(C) The price of natural gas will never again fall below that of oil.
(D) The cost of fuel needed by those of Company X’s plants that converted to natural gas is not less than the cost of fuel needed by those plants still using oil.
(E) The price of oil will not experience a sudden and steep increase.

Question Discussion & Explanation
Correct Answer - D - (click and drag your mouse to see the answer)

 

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[1] Comment to this Article

  1. Ron October 1, 12:38 AM

    A) Company X does not have money set aside for the increased costs of fuel.
    We do not know and stating so would only be an assumption, so ignore

    (B) The increase in the cost of fuel cannot be offset by reductions in other operating expenses.
    Once again, we do not know. We could fire a lot of people to save labor cost, but once again we are assuming: ignore

    (C) The price of natural gas will never again fall below that of oil.
    commodities rise and fall all the time, selecting this would be an assumption, so ignore

    (D) The cost of fuel needed by those of Company X’s plants that converted to natural gas is not less than the cost of fuel needed by those plants still using oil.
    I selected this choice in 20secs and still haven’t read it as it is the only viable option left.

    (E) The price of oil will not experience a sudden and steep increase.
    commidity prices rise and fall so selecting this would be an assumption. steep increase is also subjective and therefore avoided. 10 dollars or 3% could be the increase and left to interpretation, so aviod!

    Reply