CAT Exam

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?

Read Solution (Total 2)

amount of alcohol contained in it after 2 litres of it being taken out twice & added with water= 10(1-(2/10))^2 = 32/5.
So amount of water in it = 10-(32/5) = 18/5.
So, % of water= 36% ans.
11 years agoHelpfull: Yes(1) No(0)

35 percent .
11 years agoHelpfull: Yes(0) No(0)

CAT Other Question

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? In a cube, one pair of opposite faces is painted in Red, the second pair of opposite faces is painted Greeen and the third pair is in Blue. This cube is now cut into 729 smaller but identical cubes.
(i) How many small cubes are there with at least two different colors on their faces??
(Ans. 92)
(ii). How many small cubes are there with exactly one face painted red???
(Ans. 98)

please explain in detail.