2. 外语
  3. The table above shows the car rental charges at Thrifty Agency. The daily rate applies for each day or fraction of a day in exce

The table above shows the car rental charges at Thrifty Agency. The daily rate applies for each day or fraction of a day in exce

admin2022-10-18  91
问题
The table above shows the car rental charges at Thrifty Agency. The daily rate applies for each day or fraction of a day in excess of any multiple of a 7-day week, up to the charge per week. If Olga rented a car of one of the types indicated, which type was it?
(1) Olga’s total rental charge, based only on the rates specified, was $184.
(2) Olga rented the car for 10 days.
选项 A、Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B、Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C、BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D、EACH statement ALONE is sufficient.
E、Statements (1) and (2) TOGETHER are NOT sufficient.
答案A
解析 Determine which type of car Olga rented.
(1)     Since Olga’s total rental charge was $184, determine for which type of car (economy, compact, midsize or standard) (184 - charge per week)/charge per day is an integer. Note that Olga did not rent a luxury car because 184 < 200 and 184 is not a multiple of 39.
Economy:     184 - 100 = 84 = 3(28)
Compact:     184 - 120 = 64, not a multiple of 30
Midsize:      184 - 140 = 44, not a multiple of 32
Standard:     184 - 160 = 24, not a multiple of 34
Olga rented an economy car; SUFFICIENT.
(2)    Just knowing that Olga rented the car for 10 days is not enough information to determine which type of car she rented; NOT sufficient.
The correct answer is A;
statement 1 alone is sufficient.
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