[問題] 問一題模考題
題目是這樣的
這題是比大小，實在看不太懂題目@@
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
The positive difference
between Carol's age, 36
in years, and her
father's age, in years
另外多補問一題>"<
The water level in a tank is lowered by 6 inches, then raised by 8 inches,
and then lowered by 4 inches. If the water level was X inches before the
changes in level, which of the following represents the water level, in inches
, after the changes?
題目給的答案是X-1 1/2
不知道這答案到底是怎麼出來的...
懇請各位賢拜給點意見Orz
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