Originally posted by knptmug at 2005-4-20 09:47 PM: 5 u9 I& H. v, Yset small watermelon: x, middle watermelon y and big watermeton z - a% g' V1 f; _ v 6 `# o6 w* q, K/ [5 ^& a9 \two simultaneous equations are set up: ' f% V. j. @$ i r0.5x+2y+5z=50 (1) + Y/ G) }. @# s% c/ Tx+y+z=50 (2) $ s3 y% D) q' gEquation(1) means that the total amount paid is equal t ...