作者gisanchun (阿G魔人現身...)
看板GRE_Verbal
標題[請益]計量一題
時間Sat May 5 12:46:27 2007
Carol’s age, in years, can be expressed by reversing the digits in her
father's age, in years. The sum of the digits in each age is 10.
(a) The positive difference between Carol’s age, in years, and her father’s age, in years
(b) 36
ans:(b)
我實在不懂...麻煩好心人解惑~thx~
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