Two equal glasses filled with mixture of milk and water in the proportions of 2:1 and 1:1 respectively are emptied into a third glass. What is the proportion of milk and water in the third glass?
A. 7:3
B. 5:7
C. 3:7
D. 7:5
E. None of these

• first glass = 2:1
  milk in first glass = 2/3 water in first glass = 1/3
  
  second glass = 1:1
  milk in second glass = 1/2 water in second glass = 1/2
  
  third glass = (milk in first glass + milk in second glass)/(water in first glass + water in second glass)
  
• 7 years agoHelpfull: Yes(2) No(1)
• answer -7:5 option D
• 5 years agoHelpfull: Yes(0) No(0)