CAT Exam Category

8 litres are drwan from a cask full of wine and filled with water.operation is perfromed 3 times.now the ratio is 16:65
how much wine originally?

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Qun from Rsagrawal page 439 ,18qun
let wine in cask is Xlit
x(1-8/x)/x=16/81
x-8/8=2/3
x=24ans
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Ans : 24
same as the above problem
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24
x(1-8/x)^4/x=16/81
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CAT Other Question

a reduction of 20% in the price of orange enables a man to buy 5 more oranges for Rs 10.the price of an orange before reduction: 9 litres are drawn from a cask full of water and filled with mik.9 litres of mixture are drawn and again filled with milk.now the quzntity of milk to that wzter in the cask is 16:9.how much mixture does the cask hold?