David maria and simone are shading same size index cards for his science project david shadid 2/4 of his index cards maria shaded two a's of the english card and simone shaded to six of the index card

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.