X/(1+20%):Y/(1+15%)=5:4怎么解
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X/(1+20%):Y/(1+15%)=5:4怎么解
X/(1+20%):Y/(1+15%)=5:4怎么解
X/(1+20%):Y/(1+15%)=5:4怎么解
x/1.2:y/1.15=5:4
x*4/1.2=y*5/1.15
Y约分化简后的
x:y=30:23
x/y=30/23
1+1