Anumberaincreasedby20%ofaresultsinanumberb.Whenbisdecreasedby33(1/3)%ofb,theresultisc.Thenumberciswhatpercentofa? A: 40% B: 60% C: 80% D: 120% E: 150%

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2022-06-04 问题

Anumberaincreasedby20%ofaresultsinanumberb.Whenbisdecreasedby33(1/3)%ofb,theresultisc.Thenumberciswhatpercentofa? A: 40% B: 60% C: 80% D: 120% E: 150%

Anumber<em>a</em>increasedby20%ofaresultsinanumber<em>b</em>.When<em>b</em>isdecreasedby33(1/3)%of<em>b</em>,theresultis<em>c</em>.Thenumber<em>c</em>iswhatpercentof<em>a</em>? A: 40% B: 60% C: 80% D: 120% E: 150%