Ariel uses 7/8 of a cup of vinegar in her salad dressing recipe. How much vinegar would Ariel use to make 1/2 of a recipe? show calculation and final answer.

Damon makes 20 cups of lemonade by mixing lemon juice and water. the ratio of lemon juice to water is shown in the tape diagram. lemon juice\text{lemon juice} lemon juice water\text{water} water how much lemon juice did damon use in the lemonade? cups