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枫下家园 / 家庭与子女 / 感谢诸位,再次请教。我的数学太差,先谢了!
-bilinguist(不平则鸣);
2002-10-20
{535}
(#808280@0)
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10 players $140, <p>
20 players $205, add 10 players costs $65,<p>
40 players $(140+3*65) = $335
-gettext(gettext);
2002-10-20
(#808358@0)
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非常感谢!我认为你是对的。因为$335/40=8.375=8.38
但你是用比例来做的,能不能用解方程的形式来做(课本上的要求)。
再一次谢谢你!
-bilinguist(不平则鸣);
2002-10-20
(#808410@0)
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二元一次方程组140=S+k*10
205=S+k*20
解出
S = 75
k = 6.5
So,
S+k*40 = 75+6.5*40 = 335
-gettext(gettext);
2002-10-20
{80}
(#808605@0)
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谢谢你!高手,你的答案是完美的!
-bilinguist(不平则鸣);
2002-10-21
(#809096@0)