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Опрос |
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GMAT/Data Sufficiency
At the Chairman of the Boards Club only chess, checkers, and backgammon are played. If there are 100 players in the club and all players play at least two types of games, how many play both backgammon and chess?
(1) 20 players play both checkers and backgammon.
(2) 30 players play both chess and checkers.
A) if statement I alone is sufficient to answer the question, but statement 2 alone is not sufficient
B) if statement 2 alone is sufficient to answer the question, but statement I alone is not sufficient
C) if both statements together are needed to answer the question, but neither statement alone Is sufficient
D) if either statement by itself is sufficient to answer the question
E) if not enough facts are given to answer the question
| ОТВЕТЫ И КОММЕНТАРИИ |
| Решение |
E) not enough facts are given to answer the question |
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A motorist travels 120 miles to his destination at an average speed of 60 miles
per hour and returns to his starting point at an average speed of 40 miles per
hour. His average speed for the entire trip is
А) 53 miles per hour
В) 50 miles per hour
С) 48 miles per hour
D) 45 miles per hour
Е) 52 miles per hour
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