CAT Exam

rama can finish a work in 20 days and rani can finish the same work in 15 days.both worked for some day then rama left the job.then rani worked for one day the job was over.in how many days rama worked along with rani?

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CAT Other Question

a person bougth two tables one at a loss of 5% and other at a gain of 6% and thus on the whole he neither gain or loss.what is the cost price of each table? can contain 10 litres of alochol .2 litres of alochol is taken out.2 litres of water is pund into it.again 2 litres of mixture taken ou of the milk can.and 2 litres of watre is pund into it.what is the percentage of water in the milk can?