Originally posted by knptmug at 2005-4-20 09:47 PM: 5 c2 h2 G. P6 }! D: }" mset small watermelon: x, middle watermelon y and big watermeton z8 O/ }* l8 [2 r
% t( Q, p* J) N6 S* R: M( ] stwo simultaneous equations are set up: k ^. l& ^9 m+ s: A& q/ d2 {- W0.5x+2y+5z=50 (1) m/ B3 U% x0 b8 q! f/ ~x+y+z=50 (2)+ S5 u1 H% M' R$ a# P
Equation(1) means that the total amount paid is equal t ...