A ratio compares the frequency of one value for a variable with another value for the variable. The first value identified in a ratio must be to the left of the colon (:) and the second value must be to the right of the colon (1st value : 2nd value).
The Canadian two-dollar coin, commonly called the toonie, is the most valuable of the frequently used Canadian coins. It was introduced on February 19, 1996, by Public Works minister Diane Marleau.
Toonie is a portmanteau word combining the number two with the name of the loonie, Canada's one-dollar coin. It is occasionally spelled twonie or twoonie, but Canadian newspapers and the Royal Canadian Mint use the toonie spelling. When the coin was introduced, a number of nicknames were suggested.