Originally posted by knptmug at 2005-4-20 09:47 PM:# H" a- K* S& {
set small watermelon: x, middle watermelon y and big watermeton z . o1 g+ g4 w) Q' M+ \0 T 3 E H& @5 F5 G. b& wtwo simultaneous equations are set up: " c( \& ~" O2 M. H2 _ O0.5x+2y+5z=50 (1) 4 U- ^( g, H/ i( L: D* }x+y+z=50 (2) ' u! }$ f" H; W8 N7 p8 m0 s- bEquation(1) means that the total amount paid is equal t ...