Originally posted by knptmug at 2005-4-20 09:47 PM: * n9 P4 ^# w" c% u/ mset small watermelon: x, middle watermelon y and big watermeton z 6 G& X4 ?6 N/ o% H! y; m7 h. C, x+ V! v2 ?5 P9 ?
two simultaneous equations are set up:: D' e( P J% ]4 Z8 y
0.5x+2y+5z=50 (1) 0 y8 Q1 E7 o$ f; B, Y% O( vx+y+z=50 (2) : |5 O2 l; f/ c, C& gEquation(1) means that the total amount paid is equal t ...