Originally posted by knptmug at 2005-4-20 09:47 PM: + U9 l7 ?* w; p2 f+ f; Z; @6 \set small watermelon: x, middle watermelon y and big watermeton z . _0 V% K9 f. _$ _, o' \, K# g- p( {; S: J
two simultaneous equations are set up: / P/ y5 K* g4 R7 c0.5x+2y+5z=50 (1) 1 G' l4 f* L( ^% q. Mx+y+z=50 (2) % k: P k, L1 M+ ~3 Z4 S) G1 ]Equation(1) means that the total amount paid is equal t ...