Question

If 1 chinese yuan equals 0.1558 us dollars then 1 us dollar equals approximately how many chinese yuan

Answer 1

`0.1558 \texttt{ chinese yuan} \cdots \cdots \cdots \cdots \cdots 1 \texttt{ USD} \\\\ 1 \texttt{ chinese yuan} \cdots \cdots \cdots \cdots \cdots \cdots \cdots x \texttt{ USD} \\\\ \displaystyle x = (1)/(0.1558) = \boxed{6,4184\text{USD/chinese yuan}}`

Answer 2

1 / 0.1558 = x / 1....1 yuan = $ 0.1558 to x yuan = $ 1
cross multiply
0.1558x = 1
x = 1 / 0.1558
x = 6.418 rounds to 6.42 Chinese yuan