阿迪达斯宽松运动裤:若x:y=3:2,且x+3y=27,则X,Y中较小的树是多少?
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令x=3t,y = 2t
有3t + 3*2t = 27
=>t = 3
=> x= 9,y= 6
=>X,Y中较小的树是6
6
若x:y=3:2,且x+3y=27,则X,Y中较小的树是多少?
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