 鲜花( 634)  鸡蛋( 5)
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Originally posted by knptmug at 2005-4-20 09:47 PM:
: G- a( N; y `8 k/ D0 Aset small watermelon: x, middle watermelon y and big watermeton z
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7 ~! l- e& J2 r. n7 Q9 J" J3 O" q! ktwo simultaneous equations are set up:: x, {- s) d) ~/ V( l N$ d' H
0.5x+2y+5z=50 (1)- G" h( v# Z; O$ K0 S$ q8 K
x+y+z=50 (2)/ i% B; A: c0 L3 ~
Equation(1) means that the total amount paid is equal t ...
+ ]( n" P$ t, s3 W, L:lol::lol:
$ j" u, {% r- Y6 f% v) F/ I楼主的标题就是给你写的!5 {- w" K0 y, g7 \0 @2 j- z. m
你看看我们智力超群的同学们回答的都多好啊! |
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