Originally posted by knptmug at 2005-4-20 09:47 PM: # N: j/ [; G/ h( T0 ?set small watermelon: x, middle watermelon y and big watermeton z4 K+ {1 t) }% V( F0 L+ b# c( V4 A
9 J, x( B t9 i' t: C& Qtwo simultaneous equations are set up:2 T* N" ?$ S' m& g( i, N5 G
0.5x+2y+5z=50 (1) - H0 b$ X0 ~" X) b8 \ Lx+y+z=50 (2) + P' s# k7 n3 AEquation(1) means that the total amount paid is equal t ...