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枫下家园 / 家庭与子女 / 我小孩有道题不会做，想请大家帮忙。
-bilinguist(不平则鸣);
2002-10-20
{537}
(#807691@0)
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(1). 12X4=S+12K (2). 30X1.2=S+30K 计算: K=-2/3 S=56 然后 T=56+60X(-2/3)=16... 不会了
-midnightblues(和starinfo开中介);
2002-10-20
(#807703@0)
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56
-laoyou(老游);
2002-10-20
(#807704@0)
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S = 28K is inversely so the equation goes
T = S + K/N
48 = S + K/12
36 = S + K/30
S = 28
K = 240
a) When n = 60, T = 28 + 4 =32.
b) Constant cost is S = 28.
-jeffrey815(Smartiecat);
2002-10-20
{165}
(#807750@0)
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hahahaha, inversely. 我估计现在读小学我都不及格了, :(((((((((
-midnightblues(和starinfo开中介);
2002-10-20
(#807755@0)
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Yes. Thank you! Only you are right up till now! Thank you very much!
-bilinguist(不平则鸣);
2002-10-20
(#807802@0)