what is a sentence for exchange rate?
First of all, exchange rate means when one amount of currency equals another.
For example, 1 riyal = 0.27 US Dollars.
Now, our sentence: The exchange rate for 1 riyal was .27 US dollars.
Exchange rate= the amount from one to another, such as 1 US dollar is the equvialnt to 1.4 candian curency.
Sentence may say...
The exchange rate is relatively low from the US to Canada.