self Maths Puzzle

tomato puree is made by tomato juice,if tomato puree has 20% water.and tomato juice has 90% water,20 l tomato juice contain how muc h tomato puree

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self Other Question

amit can complete the work in 2.25 days ,and b can complete it in 4.5 days,c can complete in 9 days while d can complete in it 18 days,they are split into two groups such that the differnce between the time taken by the two grp is min,what will be the composition of faster grp?
1.a 2.a,d 3.b,c 4.b,c,d
abhi and ash picks up a ball at random from a bag containing M red n N yellow balls,one after the other replacing ball every time until one of them gets a red ball.the first one to get the red ball is the winner,if abhi begins ,n odds are in favour of his winning the game are 3 to 2,find the ratio M:N