SOLUTION: A container has 42 litre of mixture consisting of milk and water in the ratio of 5:2 how much more water should be added to the ratio becomes 2:1.

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Question 1091628: A container has 42 litre of mixture consisting of milk and water in the ratio of 5:2 how much more water should be added to the ratio becomes 2:1.
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
5:2 is total of 7 parts.
42%2F7=6

%285%2F7%29%2A42=30------liters milk
and
%282%2F7%29%2A42=12-----liters water


Add v liters of water to get 2:1 milk to water.
30%2F%28v%2B12%29=2%2F1

30=2%28v%2B12%29
15=v%2B12
highlight%28v=3%29-------------Add three liters of water.