What is the estimate of this unit rate? : $74.75

What is the missing step in this proof ?

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.

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