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標題:

請教中一數學問題

發問:

$670 was divided among peter, paul and mary so that peter gets$150 more than paul and paul gets $80more than mary. how much money did mary get?

最佳解答:

Let x be Mary get : then Paul get (x + 80) Peter get x + 80 + 150 = (x + 230) Peter + Paul + Mary = (x+230) + (x+80) + x = 670 3x + 310 = 670 3x = 360 x = 120 So Mary get $120.

其他解答:

670-80(2)-150=360 360/3=120 peter gets:120+150+80=$350 paul gets:120+80=$200 mary gets:$120A9A39959EDCC7BE3