Originally posted by knptmug at 2005-4-20 09:47 PM: c* |9 I4 f' W/ v6 V& _0 Wset small watermelon: x, middle watermelon y and big watermeton z( H) t; s6 [: g; I3 d
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two simultaneous equations are set up: 6 Q* | X/ q- [1 s$ r: o0.5x+2y+5z=50 (1) 4 p* g, ?& w' e. J" ^' @# `4 Jx+y+z=50 (2)7 I2 u. G/ C! w/ n( n/ F
Equation(1) means that the total amount paid is equal t ...