An item on sale costs  85% of the original price. The original price was  $75.

i think there was a typo. you wrote pat brings 3 quarts of ice-cream to the party. each serving of ice-cream is 1 6 quart. how many total servings of ice-cream does pat bring to the party? i think the bold is supposed to be 1/6. so 1 quart of ice cream = 6 servings. 6 * 3 = 18.

a variable is any characteristics, number, or quantity that can be measured or counted. a variable may also be called a data item. hope i !