Originally posted by knptmug at 2005-4-20 09:47 PM: - o/ r2 V7 u! P& r$ [, iset small watermelon: x, middle watermelon y and big watermeton z, n- L2 P; u% R# x# K
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two simultaneous equations are set up: ; ?- t; V) z8 B8 Z8 R% L0.5x+2y+5z=50 (1) 6 y7 [! i" b: v L) Vx+y+z=50 (2)% D- M' A' z) l4 z9 {
Equation(1) means that the total amount paid is equal t ...