作业帮A man has bought 123chicks and 86 ducks. The total cost of c
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A man has bought 123chicks and 86 ducks. The total cost of chicks and ducks is 504 Yuan.and we know the price of 3chicks equals that of 2ducks.
What's the price of each chick and duck?
______Yuan per chick ________Yuan per duck
What's the price of each chick and duck?
______Yuan per chick ________Yuan per duck
你是要问数学,还是英语?
___2___Yuan per chick __3______Yuan per duck
再问： 过程，怎么得来的
再答： x=price for chick y=price for duck eq 1: 123x + 86y = 504 eq 2: 3x = 2y y=3x/2 substitute into eq 1: 123x + 86*3x/2 = 123x + 129x = 252x = 504 therefore, x=2 y=3*2/2=3
___2___Yuan per chick __3______Yuan per duck
再问： 过程，怎么得来的
再答： x=price for chick y=price for duck eq 1: 123x + 86y = 504 eq 2: 3x = 2y y=3x/2 substitute into eq 1: 123x + 86*3x/2 = 123x + 129x = 252x = 504 therefore, x=2 y=3*2/2=3
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