There is a 154 litres mixture (soda + water), such that ratio of quantities of soda and water in it is 6:5, respectively. How much quantity of soda should be mixed in this mixture so that the ratio of quantities of soda to that of water will become 9:5?
Quantity of soda in 154 litres of mixture = (6/11) × 154 = 84 litres Quantity of water in 154 litres of mixture = (5/11) × 154 = 70 litres According to question, Water remains same till the end of the process, So final quantity of soda in the mixture = 70 × (9/5) = 126 litres Quantity of soda to be added = 126 – 84 = 42 litres
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