1. 729 ml of a mixture contains milk and water in the ratio 7 : 2. How much more water is to be added to get a new mixture containing milk and water in the ratio 7:3 ?
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By: anil on 05 May 2019 01.51 am
As it is mentioned that in a 729 ml mixture of milk and water ,the ratio of Milk : water = 7:2 So amount of milk = $$frac{7}{9}$$ x 729 ml = 567 ml amount of water = $$frac{2}{9}$$ x 729 ml = 162 ml Let the amount of water added be y ml So it is given that : => $$frac{567}{162+y}$$ = $$frac{7}{3}$$ => $$162 + y = 243$$ => $$y$$ = 243-162 = 81 ml
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