Money has units that can be treated like any other units, using the same techniques we’ve just seen. The conversion factors from one country’s currency to another’s is a function of time, and even var...Money has units that can be treated like any other units, using the same techniques we’ve just seen. The conversion factors from one country’s currency to another’s is a function of time, and even varies minute to minute during the day. These conversion factors are called exchange rates, and may be found, for example, on the Internet at http://www.xe.com/currencyconverter/ The unit of currency in Iceland is the Icelandic króna (kr).