Question

How many Euros would you pay for $27 shirt, assuming that 1 Euro = $1.3?

Answer 1

`20.77` Euros

Explanation:

Currency conversions can always be done by using direct proportion. As the amount of one currency increases, so does the other.

If you look at the exchange rate you can tell whether the value will increase or decrease, this acts as a check for your answer.
(Dollars to Euros gives a smaller answer: `1.3 rarr 1`)

`("Euros" rarr)/("dollars" rarr) = 1/1.3 = x/27`

Cross-multiplying gives:

`1.3x =27`

`x = 27/1.3`

`x = 20.77`

The answer is less than `27`, as we expected.