作者frostyfox (冰冷的雙眼...)
看板GRE_Verbal
標題Re: 請教GRE數學問題
時間Mon May 28 09:19:55 2007
: 問題三:
: The total surface area of cube Ｃ equals 150.
: Column A column B
: the length of one edge of cube C 4.5
: Answer: A
cube=正方體
所以 6x^2=150 => x=5
: 問題四:
: On a trip, Marie drove 200 miles in 5 hours using gasoline that
: cost her $1.49 per gallon.
: Column A Column B
: Marie's average speed for the Marie's gas mileage for the
: trip in miles per hour trip in miles per gallon
: Answer:D
A=200/5=40
B=200/耗費掉的總油量
所以不能算，因為不知道他到底花掉多少油
: 感謝大家的回答啊！
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