Two equal glasses filled with mixtures of milk and water in the proportions of 2 : 1 and 1 : 1 respectively were emptied into third glass. What is the proportion of milk and water in the third glass?
1
5 : 7
2
7 : 5
3
7 : 6
4
6 : 7
Two equal glasses filled with mixtures of milk and water in the proportions of 2 : 1 and 1 : 1 respectively were emptied into third glass. What is the proportion of milk and water in the third glass?