Question

On October 23, 2011, one Chinese yuan was worth 0.16 U.S.Dollars. On that date, how many yuan was 38.39 dollars worth? ROUND TO THE NEAREST HUNDREDTH OF A YUAN

Answer 1

Let x be the amount of yuan that 38.39 dollars was worth. Since the ratio of chinese yuan to dollars is 1 to 0.16, then:

`\frac{x}{38.39\text{ dollars}}=\frac{1\text{ yuan}}{0.16\text{ dollars}}`

Solve for x:

`\begin{gathered} x=\frac{1\text{ yuan}}{0.16\text{ dollars}}*38.39\text{ dollars} \\ =(38.39)/(0.16)\text{ yuan} \\ =239.9375\text{ yuan} \\ \approx239.94\text{ yuan} \end{gathered}`

Therefore, the answer is: 239.94 yuan.