Originally posted by knptmug at 2005-4-20 09:47 PM:) K0 ?6 T6 }7 L' ]$ p% i$ e5 ?7 |
set small watermelon: x, middle watermelon y and big watermeton z 2 }- v& t, l/ g* Q- X/ n' i q) `- H
two simultaneous equations are set up: + z l( M( t" M: \" o* \( i- I0.5x+2y+5z=50 (1)& V# z/ D7 d% c9 N1 r8 z# z! Z
x+y+z=50 (2)" d1 F; Z* p9 `5 d' I
Equation(1) means that the total amount paid is equal t ...