The question is in the screenshot

How is working backward similar to solving an equation?

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

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