Question
Quantity of water in a 250 litres mixture (alcohol +
water) is 30 litres less than the quantity of alcohol in it. Find the quantity of water to be mixed so that the quantity of alcohol in the mixture becomes 40% of the whole mixture.Solution
Quantity of water in the mixture = (250 – 30)/2 = 110 litres So, Quantity of alcohol in the mixture = (250 – 110) = 140 litres Total quantity of the mixture = 140 x (100/40) = 350 litres Therefore, quantity of water to be mixed = 350 – 250 = 100 litres
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