Question

At a currency exchange, 3 u.s. dollars can be exchanged for 5 japanese yin. how many yin will you receive for 1 u.s. dollar?

Answer 1

1.67 japanese yin

Explanation:

We can calculate it with a direct rule of 3. If 3 u.s. dollars can be exchanged for 5 japanese yin, for how many japanese yin can 1 u.s. dollar be exchanged?

3 dollars
`-\!\!\!-\!\!\!-` 5 japanese yin

1 dollar
`-\!\!\!-\!\!\!-` x japanese yin

We use the formula of the direct rule of 3:

`x = \frac {1 * 5}{3} \\ \\x = \frac {5}{3}`

x = 1.67

Answer 2

For this particular question, we are asked to simply convert dollar into yin. A currency rate is needed to do this and it is given in the problem statement where 3 u.s. dollars can be exchanged for 5 japanese yin. We calculate as follows:

1 dollar ( 5 japanese yen / 3 us dollars) = 1.67 yen