 鲜花( 634)  鸡蛋( 5)
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Originally posted by knptmug at 2005-4-20 09:47 PM:
9 G+ [* b0 f3 [* yset small watermelon: x, middle watermelon y and big watermeton z4 D7 t" @ N5 o$ F7 b! o- H
9 F# C9 Q5 y) [% m, Stwo simultaneous equations are set up:
4 I( P: g. a3 f; z1 l c2 g0.5x+2y+5z=50 (1)
, ?2 K7 l* q7 O: I* I6 Ex+y+z=50 (2)- Y( E. ]8 B w$ P: T
Equation(1) means that the total amount paid is equal t ...
1 z3 U5 k, X' o. G7 T, a:lol::lol:
0 N: B4 T6 V3 X& I }( d楼主的标题就是给你写的!
# k2 J V. ?5 W7 ?7 i, y4 @你看看我们智力超群的同学们回答的都多好啊! |
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