Originally posted by knptmug at 2005-4-20 09:47 PM: ( {4 K# I1 Y( y' D3 H7 Nset small watermelon: x, middle watermelon y and big watermeton z ' \4 K2 v0 t& s, S9 f) _* U( W$ d" i/ v3 x- J9 B
two simultaneous equations are set up:" z. }" T3 C0 u6 S* T$ Q
0.5x+2y+5z=50 (1)# h2 F$ C: ^: u: |0 q, }% `
x+y+z=50 (2)( R. S9 g% n" L+ E4 U1 p
Equation(1) means that the total amount paid is equal t ...
6 ~" ~9 H+ s! n' q+ D
:lol::lol:" p9 k! c& x2 o
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