Lemonade is made by mixing lemon juice and water in the ratio of 2 to 3. How many glasses of lemon juice and water are needed to make 15 glasses of lemonade? 
 a. 3 glasses of lemon juice, 12 glasses of water 
 b. 10 glasses of lemon juice, 5 glasses of water 
 c. 6 glasses of lemon juice, 9 glasses of water 
 d. 14 glasses of lemon juice, 1 glass of water Reset Submit