 鲜花( 634)  鸡蛋( 5)
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Originally posted by knptmug at 2005-4-20 09:47 PM:
% W2 k; Z" X/ Pset small watermelon: x, middle watermelon y and big watermeton z5 O, Y+ O; s' p, a7 h( O
1 q3 X. W+ U; ctwo simultaneous equations are set up:
) R; a, w( m/ r! x2 Y0.5x+2y+5z=50 (1) x$ K2 u. `6 S. D, z7 |' y D: p
x+y+z=50 (2)
! u/ y8 q8 r" Y- Q" {7 P. hEquation(1) means that the total amount paid is equal t ...
/ q) u( F. E+ c9 `2 X) I W:lol::lol:
. }: k; l9 C2 }1 C" a3 ], _7 B楼主的标题就是给你写的!( L- v8 `# e$ }( J5 w4 [
你看看我们智力超群的同学们回答的都多好啊! |
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