4分之X=3比百分之30

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4分之X=3比百分之304分之X=3比百分之304分之X=3比百分之30X/4=3:30%0.3X=12X=40x/4=3:30%0.25x=3÷0.30.25x=10x=10÷0.25x=40X/4

4分之X=3比百分之30
4分之X=3比百分之30

4分之X=3比百分之30
X/4=3:30%
0.3X=12
X=40

x/4=3:30%
0.25x=3÷0.3
0.25x=10
x=10÷0.25
x=40

X/4 =3:30%
30%X =4×3
0.3 X = 12
X =40

x/4=3/30%
x/4=10
x=10*4
x=40

40