GMAT Question of the Day (Apr 12): Rate Problem and Critical Reasoning

By - Apr 12, 02:00 AM Comments [0]

Math (DS)

In the morning, John drove to his mother's house in the village at an average speed of 60 kmh. When he was going back to town in the evening, he drove more cautiously and his speed was lower. If John went the same distance in the evening as in the morning, what was John's average speed for the entire trip?

1. In the evening, John drove at a constant speed of 40 kmh.
2. John's morning drive lasted 2 hours.

OA and Explanation

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Verbal (CR)

Because of a rare type of fungus that killed off many cacao trees in Brazil, there was an unusually meager harvest of cacao beans this year. The wholesale price of cocoa solids and cocoa butter has increased significantly and is unlikely to fall in the foreseeable future. As a result, the retail price of chocolate is certain to increase within six months.

Which of the following, if true, most seriously weakens the argument above?

(A) Consumers will purchase other sweets if the price of chocolate increases.
(B) Researchers have discovered an effective method to kill the fungus.
(C) Dark and bittersweet varieties of chocolate will be affected more seriously than milk varieties.
(D) The price of chocolate has decreased steadily for three years.
(E) Most chocolate in stores is manufactured from cocoa that was purchased two years earlier.

OA and Explanation

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