Percentage

好簡單，因為答案是5÷6，你計左6÷5

B(1+20%)=A
1.2B=A
B=A÷1.2
B=5A÷6
B=A(5÷6)
B=A(83+1÷3%)

所以答案是83又1/3%

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100/120

=5/6

Ans:5/6

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A = (1+20%)B
A = 1.2 B
B = (1/1.2) A
B = 0.8333333A or 83.3333% of A